1 pkg. dry yeast
1/2 c. lukewarm water
2 c. warm water
2 tbsp. sugar
2 1/2 tbsp. all-purpose flour
1/3 to 3/4 c. sugar (as desired)
3 tbsp. instant potato flakes
1 c. warm water

Mix well. Leave out of fridge all day (8 to 12 hours) or until very bubbly. Remove 1 cup and return to fridge. Keep in fridge 3 to 5 days and feed with same ingredients. If not making bread, throw 1 cup away after feeding. Always feed 3 to 5 days.