Sourdough Bread - cooking recipe

Ingredients

7 c. fresh ground rye flour
7 c. fresh ground whole wheat flour
2 cartons plain yogurt
2 pkg. Fleischman's yeast (prove yeast in 1/8 c. warm water and 1 tsp. sugar)
1 Tbsp. salt
3 c. skim milk
3 Tbsp. olive oil

Preparation

Combine all ingredients and knead vigorously and long.
After a few minutes, it should form a ball that holds together.
If sticky, add flour, a handful at a time.
If too dry and stiff, add skim milk.
Use either a kneader pot or by hand on a floured board.