Tuesday, November 19, 2013

Conclusions and Future Works

It's hard to believe this is the final post. Here, we will cover some of our unanticipated challenges and questions, as well as conclusions regarding our project. For a quick recap of our original questions and anticipated challenges, please see First Step and Anticipated Challenges: Mead Edition.

In the end, the anticipated challenges we covered were far from complete. However, these bumps in the road raised some interesting questions. For instance, we were unable to regulate the temperature for the entire fermentation process and yeast is sensitive to temperature, so this may have impacted our ability to compare both batches of mead (Wine Kitz 2013). While we did not find information on whether regulating temperature was also an issue for the Vikings, we wonder where in the home mead would have been made during the Viking Age. In colder climates, perhaps if a fire was going in the kitchen for cooking and warmth, this could have provided a more consistent room temperature conducive to fermentation. Temperature was also an issue for measuring gravity, as the hydrometer we used was designed to read liquids at 60° F; thus, our readings may not be entirely accurate, especially if the temperature was different at the time of each reading. The fact that our initial measurement for the gravity of the pasteurized honey must was taken later when conducting the Raisins Experiment adds to the potential inaccuracy of the alcohol content reading. Our access to this tool is still useful in comparing the two batches, as initial readings did seem to vary based on the honey used (such as not even being able to get an initial reading for must used in the Raisins Experiment), but we still wonder what methods (if any) were used to determine when mead was ready by the Vikings. In addition, forgetting to add the raisins turned out to be a productive error; this mistake allowed us to learn more about the use of raisins, since we may not have felt as comfortable tampering with each batch of mead to see how the raisins responded at different stages. Having to negotiate time constraints and schedule conflicts also proved to be a challenge, as this lead to the the first batch of mead being left to ferment for 8 days while the second batch fermented for 5. However, we realized through these experiments that both pasteurized and unpasteurized honey are filtered to some extent, and that a better comparison would have included must made directly from honeycomb, as this is closest to what the Vikings would have used (Your Shout Mate 2012). We were able to clear most of the impurities and wax from the must made from honeycomb using cheese cloth, but the depth of colour and complexity of taste indicated a much different product than what we produced using commercial honey.

The process of making Viking Age inspired flatbreads also required us to respond to unforeseen issues. We were unable to grind the grain ourselves by employing traditional methods (such as a stone mortar and pestle) as we did not have the time or man power to produce enough flour for the recipes, so we used store bought grain flour instead. Since we did not have access to a wooden trough or bowl to mix the ingredients in, or an open fire to cook the bread over, we used a cast iron pan over a stove top element on medium-to-low heat. If we had had more time and resources, it would have been nice to try experimenting with some of these traditional methods, especially as our ability to regulate temperature more evenly may not have been accessible to the Vikings. We would have also liked to try making our own flatbread recipes by mixing the flours of the different grains, adding whole grains (like we did with the oat bread), or adding dried fruits or nuts that would have been available to the Vikings. With this in mind, we wonder if the Vikings would have used formal flatbread recipes, or if baking was something that was more intuited. Even with a recipe, the latter approach is still often required. Unfortunately, we were not able to try the leavened rye flatbread because the yeast starter died.


Despite these challenges, we were able to answer our original questions to some extent, as detailed below.

1. How does using pasteurized or unpasteurized honey affect the preparation of mead prior to fermentation in regards to duration, ease, and effectiveness?

Both the pasteurized and unpasteurized honey are commercial products, and therefore already filtered and processed. This shortened the duration and eased the process of preparing the must, since we did not have to heat the must to remove any impurities such as wax. However, heating the mixture did allow us to combine the water and honey more easily. Due to the late purchase of the hydrometer, as well as the varying lengths of fermentation, the impact each type of honey had on the process of fermentation is unclear. Though, the second batch appears to have not been as reactive, as the first batch had a lot more bubbles and film on the surface, which a product of fermentation (Your Shout Mate 2012). It is possible that the yeast may not have activated as well or, since each batch fermented in a different location, perhaps the temperature at the second location was not as conducive to fermentation. Furthermore, must made from honeycomb honey and commercial honey would have provided a better answer in this regard, as must made from honeycomb honey would have many natural additives like yeast (Benefits of Honey 2013). Although time constraints would not have allowed us to test this, it would have also been interesting to compare a short and long mead, since we have no idea how long the Vikings would have fermented the mead for, or direct experience with how these processes differ. Another potential issue with comparing these two meads, is due to our use of potassium metabisulphite (an additive sometimes used in wine as a stabilizer) to clean the materials used for the first batch and a special sterilizer for the second. Had any potassium metabisulphite remained after rinsing, this could have impacted the mead's rate of fermentation (Williams 2013).

2. How difficult is it to extract honey from a honeycomb using traditional methods?

While we followed the traditional method of extracting honeycomb, as explained on the blog Your Shout, Mate (2012), our use of modern tools and purchased honeycomb made this process easier and perhaps quicker. We were able to buy local honeycomb from a farmers' market, thus saving us the step of having to maintain a beehive or collect taxes (Ward 2013). As the packaged honeycomb had been sitting for approximately one week, most of the honey drained prior to the experiment. Thus, the first step of draining the honeycomb was not necessary, but followed nevertheless. With the use of an electronic scale, determining whether the amount of water we added was equal in weight to the honey was easily achieved. We wonder if the Vikings would have actually measured this using some type of tool or standard method. Perhaps the addition of too much water was simply determined using visual indicators such as light colour, or taste indicators such as weak flavour. In addition, our use of a stove and pot with a lid instead of an open fire and bowl, allowed us to control the temperature more accurately and monitor the mixture less throughout the process. One step that was difficult for us was filtering out the wax, as well as cleaning the materials we had used during this process (wax got everywhere and it was very hard to remove). Your Shout, Mate (2012) suggested that the Vikings would have used muslin cloth and other materials like straw for this part of the process. Unfortunately, further details as to what this entailed were not provided, so this aspect is hard to compare.

3. What are the differences between flatbreads made of rye, oat, and barley flours?

We used the same recipe to make all three flatbreads (see First Two Batches of Bread and Rye Flatbread Experiment for the ingredients and steps we took to make them) and they seemed to cook as well as age in similar ways. All three became tougher and chewier with time; the flatbreads were at their best immediately after cooking. There were not many differences between the rye and barely flatbreads, as they were both very dense, would be nice to eat along with a savoury dish, and were quite filling. However, the oat flatbread was our favourite, as it had a sweeter taste and lighter texture like a scone. As stated above, the recipe we used for the oat flatbread was identical to the other two flatbreads, but we added a small amount of rolled oats to the batch. Our preference for this flatbread may be due to the fact that oats are a prevalent grain in our daily diets today and we are accustomed to the taste; however, during the Viking Age barley was the most widely used grain (Zori et al. 2013, pp.154), so the barley flatbread may have been consumed more often and even preferred by the Vikings.

4. What are the differences between a rye flatbread and a rye flatbread leavened with a fermented starter?

Unfortunately, we were unable to compare these two flatbreads as the starter for the leavened rye flatbread died. This was most likely due to the fact that the local temperature dropped, therefore preventing the yeast from staying activated.

- B, J, and Jo


Bibliography

Unknown, 01/01/2012, A True Viking-Style Mead (Mjöð), Your Shout, Mate. Available:http://yourshoutmate.blogspot.ca/2012/01/truevikingsytlemeadmjo.html [Oct 9, 2013].

Unknown, 2013, What's so Special about Raw Honey?, Benefits of Honey. Available: http://www.benefits-of-honey.com/raw-honey.html [Nov 19, 2013].

Unknown, 2013, Top Ten Winemaking Mistakes, Wine Kitz. Available: http://www.winekitz.com/winemaking-tips [Nov 19, 2013].

WARD, C., 10/09/2013 last update, Alcoholic Beverages and Drinking Customs of the Viking Age, The Viking Answer Lady. Available: http://www.vikinganswerlady.com/drink.shtml [Oct 9, 2013].

Williams, M., 2013, Using Potassium Metabisulphite, Winemaker's Academy. Available: http://winemakersacademy.com/potassium-metabisulfite-wine/ [Nov 19, 2013].

Zori, D. et al, 2013. Feasting in Viking Age Iceland: sustaining a chiefly political economy in a marginal environment. Antiquity, 87(335) pp. 150-165. 

Rye Flat Bread Experiment

This week we experimented with making rye flatbread. All the ingredients and cooking techniques were the same as in our previous flatbreads, but for this recipe we used rye flour.

Here are all of our ingredients!


Step 1: Put rye flour in bowl.

Step 2: Add a pinch of sea salt.

Step 3: Melt butter.

Step 4: Add honey to melted butter.

Step 5: Mix buttermilk into the butter and honey mixture.

Step 6: Pour liquid ingredients into dry ingredients. 

Step 7: Mix and knead mixture with hands.

Step 8: Form dough into balls.

Step 9: Flatten dough balls into circles; cook in pan until both sides are brown.

Step 10: Serve hot with butter and honey.
 
We liked the taste of the rye bread better than the taste of the barley bread, but less than the oat bread. We found that the rye had a drier, and slightly tart taste to it, compared to the barley and oat breads.

We were planning to make a leavened bread using a fermented rye flour starter this week as well, but our rye starter died and so we had to abandon that experiment. We believe the rye starter died due to a recent drop in the local temperature. The natural yeasts require a 'cozy' environment to keep on bubbling. Perhaps the kitchen it was kept in does not stay as warm as a Viking longhouse with cooking fires tended to all through the winter. It would be interesting to learn what the temperature inside one of those dwellings was during a Nordic winter. Rest in peace, rye starter!
During the Viking Age, the materials used in bread-making would have been similar to what we used in our experiment, with a few notable differences.

1. Vikings would have used flour that was ground with a quern (Graham-Campbell 1980). Their flour would have probably had a less consistent texture, and may have had small granules of rock in it that had flaked off of the quern during the grinding process. Grinding flour by hand takes a lot of time and upper body strength. Out of curiosity, we attempted to grind a small amount of barley using a stone mortar and pestle, but it took the best part of twenty minutes to produce a single coarse tablespoon. We used commercially produced whole-grain flours for our experiments because they were more affordable and they saved a significant amount of time.

2. Vikings may have used a combination of whey leftover from cheese-making and water as the liquid portion of their bread dough. We used commercially produced buttermilk as a substitute for whey, since it has similar bacterial cultures (Hurstwic.org).

3. Viking women would have kneaded their bread dough in a long wooden trough (Graham-Campbell 1980; Short; Ward). We did not have a wooden trough available to us, so we resorted to using a variety of metal, plastic, and wooden bowls.

4. In the Viking Age, they would have cooked bread over the embers of a cooking fire (Hansson 2002). We did not have access to a fire to cook our flatbreads over, so we used an electric stove set to a low-medium heat.

5. Viking Age bread would have been made in a long-handled cast iron pan (Graham-Campbell 1980; Short; Ward). Modern cast iron pans have a much shorter handle, but the technology is otherwise much the same. We used cast iron pans when making the oat and barley flatbread, and we used a non-stick pan for the rye flatbread as cast iron was not available. There was no notable difference in results when using the non-stick pan versus the cast-iron pan.

- Jennifer

Bibliography

GRAHAM-CAMPBELL, J., 1980. Home Life. In: The Viking World. USA: Ticknor & Fields, pp.
113-129.

HANSSON, A-H., 2002. Pre- and Protohistoric Bread in Sweden: a definition and a review. Civilisations, 49(1/2), PAIN, FOURS ET FOYERS des temps passés / BREAD, OVENS AND HEARTHS of the past, pp. 183-190. Institut de Sociologie de l'Université de Bruxelles. Available: http://www.jstor.org/stable/41229648 [Oct 8, 2013].

SHORT, W-R., Food, Diet, and Nutrition in the Viking Age, Hurstwic. Available: http://www.hurstwic.org/history/articles/daily_living/text/food_and_diet.htm[Oct 9, 2013].

WARD, C., Viking Foods, The Viking Answer Lady. Available: http://www.vikinganswerlady.com/food.shtml[Oct 9,
2013].

Thursday, November 14, 2013

Update on Second Batch of Mead with Unpasturized Honey

Here it is! The last batch of mead, the one we will be presenting in class tomorrow and that our class mates will be sampling. 

Day 2

Day 3

Day 4

Day 5, time to drink!
Filtering the mead using a cloth.

Filtered and bottled mead ready to take to class
tomorrow for our class mates to enjoy!

This mead tasted a lot sweeter and fizzier than the last batch. This may be due to the shorter fermenting time since there is still a lot of sugar left to be processed, thus increasing the level of carbonation (the conversion of sugar to alcohol produces carbon dioxide) and sweetness (Slinkard 2013). Another factor may be the use of unpasteurized honey, as it may have been richer in sugar and natural yeasts (so there was more to ferment), which could have produced similar effects. The initial gravity reading for this batch was 1.082/just over 10.8% and the end gravity reading was 1.068/just under 9.3%. The alcoholic content was therefore approximately 1.5%. However, as temperature could not be controlled for and gravity is best measured at 60° F, it's possible that these readings are incorrect. We also noticed this batch didn't have as much film on the surface from the fermentation process as the first batch did, which suggests to us the fermentation process may have been impacted in a way that slowed it down or interrupted it. This may have been due to the temperature of the mixture being too cool before the yeast was added or the lower temperature of where the mead was stored compared to the first batch.

I hope our classmates enjoy it!

-B (with a few additions by Jo)

Bibliography

Slinkard, S., 2013, Wine Fermentation. About.com [Online]. Available: http://wine.about.com/od/vineyardvocab/g/Wine-Fermentation.htm

The Raisins Experiment



Thus far, we have been comparing our mead recipe to another entitled “A True Viking-Style Mead" by Your Shout, Mate (2012). As we mentioned before, while we were unable to meet all of the requirements exactly (due to lack of access to traditional materials and resources), we decided to test the claim that raisins were used by the Vikings to gauge when the mead was complete, even though this aspect was not listed elsewhere. Due to time limitations, this experiment was conducted by one group member (myself). I soon learned that we took a chance by trusting the recipe from a blogger, and that the nature of our short mead as well as use of champagne yeast complicated the results.  
 
The raisin experiment was both a successful and unsuccessful endeavor. This could be attributed to multiple factors. Firstly, based on the blog post's sources, it appears that the blogger incorporated this element into the recipe based on recipes for Sima (a type of Finnish mead), though many recipes for Sima today use sugar instead of honey (Diehl 2013; Your Shout, Mate 2012). Raisins are typically added during the second stage of fermentation along with sugar (Acquiring taste 2012; Diehl 2013; Food Fusion in Finland 2011; Your Shout, Mate 2012). According to multiple sources, the end result is carbonated (Acquiring taste 2012; Diehl 2013; Food Fusion in Finland 2011). The raisins therefore work to indicate when the batch of Sima is ready to drink, by taking in carbon dioxide and subsequently floating to the top (Acquiring taste 2012; Diehl 2013; Food Fusion in Finland 2011). As Your Shout, Mate (2012) did not review the purpose of the raisins in detail, our group interpreted their use as a measurement of fermentation. 
 
The above information was learned after attempting this experiment which I will now cover. As the steps we used to make our short mead have already been reviewed in multiple blog posts (see "First Batch of Mead" and "Unpasteurized Mead Experiment"), I will not repeat them here. The only alterations were that the must left over from the honeycomb experiment was incorporated in addition to a must made from pasteurized honey (as it was already available in my home), and a glass carboy and decanter were used instead of a bucket and towel. I used Thompson Seedless Raisins (by Safeway Kitchens), though the exact type of raisins to use were not listed on Your Shout, Mate’s (2012) blog. Since I had access to a hydrometer at this time, I measured the initial gravity reading, which was above the highest reading (1.160/over 21%) and therefore could not be recorded. I suspect that the addition of the honeycomb must may have impacted the reading, as it had been sitting for a while and probably cooled off. According to the instructions, when the mixture is below 60° F you are supposed to subtract from the reading. For instance, if the mixture is at 50° F, you subtract 0.0013 from the gravity reading. I did not have a device for measuring temperature on hand, so I was unable to determine the exact alcoholic content later on.
 
As there is only one stage of fermentation for short mead, I added in 25 raisins (which is the number recommended in Your Shout, Mate's (2012) recipe) in before the yeast. Approximately half an hour later, all of the raisins had floated to the top, and I was left wondering what I had done wrong…until I considered the yeast. For each batch of mead, we have been using a yeast called Saccharomyces cerevisiae, which commonly referred to as a champagne yeast and is used to make sparkling wine. This likely affected the experiment since sparkling wines are by nature carbonated, not to mention the process of fermentation produces carbon dioxide, and this reaction is most evident during the initial stage after the adding the yeast (Slinkard 2013). Compared to Sima, which some recipes say incorporates a ¼ tsp of (unspecified) yeast per gallon or 3.78541 litres (Diehl 2013), the packaged yeast we used provided about 7x this amount for only 3 litres of must. Your Shout, Mate (2012) did suggest the use of Finnish Baker’s Yeast, which is also used to make bread and may have been used by the Vikings; however, we were unable to find this yeast locally, which is why we chose champagne yeast. Thus, the ratio of yeast to must as well as the type of yeast used impacted the results of this experiment. 
 
To see if anything changed over time, I removed the raisins and added 25 fresh ones four days later. The gravity of the mixture at this time was 1.070/9.3%, so the alcoholic content had likely increased, but this cannot be confirmed as temperature was not controlled for. Again, the raisins began to float to the top within half an hour, but interestingly they did not stay there. Until the next morning, the raisins continued to float up and down. 
 
 

While I am unsure of the exact reason for this, I wonder if the alcoholic content had something to do with it. It would be interesting to test this experiment over a longer period of time to see how the raisins respond as the alcoholic content increases and the initial period of fermentation settles down. Perhaps with time (and a different yeast), the raisins would fail to float to the top or take much longer, and could therefore work as tool to gauge the fermentation process. While this is beyond the scope of this project, I was at least left with a lovely batch of mead and a lot to think about!
 
- Jo

Bibliography
 
Diehl, K., 2013, Finnish Spring Mead (Sima). About.com [Online]. Available: http://scandinavianfood.about.com/od/beverages/r/SpringMead.htm
 
Slinkard, S., 2013, Wine Fermentation. About.com [Online]. Available: http://wine.about.com/od/vineyardvocab/g/Wine-Fermentation.htm
 
Unknown, 01/01/2012, A True Viking-Style Mead (Mjöð), Your Shout, Mate. Available: http://yourshoutmate.blogspot.ca/2012/01/truevikingsytlemeadmjo.html [Oct 9, 2013].
 
Unknown, 04/24/2011, Sima (Finish mead for Vappu/May Day), Food Fusion in Finland. Available: http://foodfusionfinland.blogspot.ca/2011/04/sima-finnish-mead-for-vappumay-day.html [November 14, 2013]. 
 
Unknown, 03/02/2013, Sima – Traditional Finnish lemon mead, Acquiring taste. Available: http://karaimame.wordpress.com/2012/05/01/sima-traditional-finnish-lemon-mead/  [November 14, 2013].
 

Wednesday, November 13, 2013

Viking Feasts and Drinking Customs


Feasting and drinking were important public ritual activities in Viking Age society that created relationships of reciprocal obligation between host and guests, as well as a sense of hierarchy such as who provides the meal, who consumes it, where an individual is seated, and who is served first. Such events were a place to establish social relationships and create associations, not to mention a time for competitive displays of generosity, power, and wealth. They provided an opportunity to attract admirers, form alliances, meet potential spouses, form trading partnerships, as well as build foundations for friendships and cooperation (Zori et al. 2013, pp.152). Feasts were not only organized for grand occasions such as celebrating victories or welcoming guests, but were also held to help lift spirits during troubled times and during winter months, or when there was an abundance of food and supplies (Pollington 2011, pp.23, 25). Cattle were a marker of status and an indicator of an individual’s wealth of resources. To be able to raise such an animal as well as have enough meat to spare made beef the most valued meat at a feast (Zori et al. 2013, pp.153).

There is not much evidence of women participating in feasts, as many of the sagas are focused on telling grand stories of men and gods (Pollington 2011, pp.29). However we do know that a very high status noble woman would serve the leader and any visiting dignitaries alcohol from a drinking horn as a way of establishing her rank before any others at the feast were served (Pollington 2011, pp.28, Ward 2013). Alcoholic drinks included imported wine, beer made from malted barley, cider made from apples or pears, and mead made from fermented honey; women made these drinks in the home (Graham-Campbell 1980, pp.124, Ward 2013). Each type of alcohol was likely reserved for different occassions: beer for large groups of people, mead for grand occasions, and wine (which was an expensive import) for sacrificial rituals (Ward 2013).

The importance of cattle to the Vikings may also be observed in the use of drinking horns, as they were only used by high status individuals or during ritual occasions, such as sacrifices or toasts to the gods (Ward 2013). Items used for drinking include drinking horns, metal bound cups, goblets, imported glass beakers and jars, and glamorous vessels for transporting and dispensing ale (Pollington 2011, pp.21, Ward 2013). Drinking horns were made from the horn of the cow and were polished and highly decorated, with precious metals and jewels around the mouth and sometimes at the point (Graham-Campbell 1980, pp.124, Ward 2013). Such horns would have been used by individuals with status and for special occasions (Ward 2013).



I took this photograph this summer at the British Museum in 
London, England. These are reconstructed drinking horns 
from the Sutton Hoo burial, mound 1in Suffolk, England
Bibliography

GRAHAM-CAMPBELL, J., 1980. Home Life. In: The Viking World. USA: Ticknor & Fields, pp. 113-129.

Pollington, S., 2011. The Mead-Hall Community. Journal of Medieval History, 37(1), pp. 19-33.

WARD, C., 11/11/2013-last update, Alcoholic Beverages and Drinking Customs of the Viking Age, The Viking Answer Lady. Available: http://www.vikinganswerlady.com/drink.shtml [Nov 11, 2013].

ZORI, D. et al, 2013. Feasting in Viking Age Iceland: sustaining a chiefly political economy in a marginal environment. Antiquity, 87(335) pp. 150-165.

-B