1,000 g of flour at 70% water, 2% salt and 1% yeast:
Water = 700 g, salt = 20 g, yeast = 10 g
Total dough = 1,730 g
Why your number may differ
Sourdough starter, eggs and other wet ingredients also carry water, which you may need to count in the hydration. Yeast percentages differ between instant, dry and fresh yeast.
Frequently asked questions
What is a baker’s percentage?
Every ingredient is written as a percentage of the flour weight, with the flour as 100%. A dough with 70% hydration has 70 g of water for every 100 g of flour.
What is hydration?
The weight of water divided by the weight of flour. Higher hydration gives a wetter, more open dough.
Why do bakers use it?
It makes recipes easy to scale and compare. You change the flour and the other weights follow.