I am a first year pastry student. I need help learning how to apply bakers percentage. I know flour is always 100% and that's about it. I need the 1st grade version please. Thanks in advance.
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For a pretty good view of baking formulas and other technical data, see if your school library has a copy of Daniel t. DiMuzio's Bread Baking: An Artisan's Perspective."
Meanwhile, here's the simple version: Formulas are valuable because the provide an easy way for bakers to multiply or divide a "recipe." You already know the key part: that flour is always expressed as 100% by weight.
So, to keep the math easy, let's say you have a formula that calls for:
Pate fermentee: 168.4%
Bread flour: 82.4%
Whole wheat flour: 15.8 %
and you'll be starting with a 100 pound sack of flour. Just multiply everything to establish the other needs. Thus:
Pate fermentee=168 pounds
Bread flour=82.4 pounds
What if you only have a 50 pound bag? Just do the same math:
Bread flour=82.4%, therefore .824 x 50=41.2 pounds.
Water= 63.2%, therefore .632 x 50=31.15 pounds.
It's really quite simple.
Lots of good books out there, Mr. Joseph Amendola was my mentor and friend. He left behind a few books on the subject. Also they are priced well.