I like the fact that in class we are not using Kitchen Aids for the mixing and kneading of doughs. By doing everything by hand, we are learning to identify when a dough has been kneaded enough just by feeling it. When people move on to using machines in big production kitchens to make large quantities, they will be able to look and touch the product to determine when it is done. What has amazed me most during this past week of bread-making is that most of the doughs that we have kneaded by hand are
extremely sticky initially but then come together as they are kneaded more. Even the end result is something stickier than I'm used to. The home baker will undoubtedly feel the urge to add additional flour at the onset to make the dough more manageable to knead?but this is actually the worst thing they could do.
There is a lot of science behind bread making and I have a greater appreciation for the artisan baker. Formulas were created to calculate the Desired Dough Temperature (DDT). This is the precise temperature that dough should be at after kneading and before resting. It is not something that is found in recipes on the web or in many cookbooks but rewards professionals with excellent results. Accurate gluten development, hydration, fermentation, and proofing times have to be understood to create an optimal product.
For most lean doughs (ones that have very little or no fat in them), the DDT is between 75°F to 80°F (24°C to 27°C). For enriched doughs (ones that have more butter, milk, eggs, etc.), the DDT is slightly higher to keep the fats soft while kneading.
So how do you find a DDT? The only temperature you can control in a recipe is the temperature of the water that you are adding. To find the DDT for a dough, you have to calculate the sum temperatures of certain factors: room temperature, flour temperature, mixer friction (the heat generated by mixing/kneading)
1, and pre-dough (sour dough, etc.). If your recipe includes 3 of the aforementioned factors, you multiply the desired dough temperature by 3. If there are 4 factors, multiply by 4 and so on. Once you have multiplied the factors, you subtract the sum temperature of the room, flour, mixer friction, pre-dough, etc. The value left is the temperature that your water should be at when adding it to your recipe.
It is quite amazing that when you follow these calculations, and after kneading for the appropriate amount of time, that the DDT will be spot-on. The benefit of having a DDT is that the yeast will be most active during this resting period and will produce gases which will be trapped between the network of gluten strands, creating a beautiful rise in the oven.
To calculate DDT (example):
| Desired Dough Temperature is: | 78°F |
| Factors | |
| Room Temperature | 71°F |
| Flour Temperature | 71.5°F |
Mixer Friction (x 2) (8 minutes of kneading time x 2)
| 16 |
| Pre-Dough (sour dough, etc.) | 69°F |
Sum of Factors (in this case there are 4 factors)
| 227.5 |
DDT multiplied by number of factors (3, 4, 5, etc.) = (78 x 4 factors) =_312_
|
| Calculated DDT __312__ minus total of factors = _227.5_ = Water Temperature of 84.5°F |
What is also interesting to me is that you can take roughly the same ingredients (flour, yeast, water, salt, butter) and form such incredibly different products from the same things just by altering the amounts, the proofing time, the baking technique, etc. Click
here for more pictures of the finished products.
1 To calculate mixer friction multiply the total kneading time by 2 (when kneading by hand). Fahrenheit should be used when calculating DDT.
Tagged as: [
baking
bread
ddt
dough
gluten
kneading
temperature
tips
]
Posted by Kimberley Slobodian on September 23, 2006
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