Sourdough Starter - cooking recipe

Ingredients

2 c. unsifted flour
2 Tbsp. sugar
1 Tbsp. salt
1 1/2 c. water
1 Tbsp. vinegar

Preparation

Combine the flour, sugar and the salt in a stone crock or bowl; mix well.
Add the water; beat to a smooth batter.
Add the vinegar.
Leave, covered with cloth, in warm place until sour (about 12 hours).