Sourdough Starter
["1 Tbsp. dry yeast, dissolved in 1/2 c. warm water", "1 1/2 c. warm water", "2 c. flour", "1 tsp. salt (stir in)", "1 Tbsp. sugar", "1/2 c. water", "1/2 c. flour", "1 tsp. sugar"]
["Let stand until bubbly and well-fermented, at least 1 day. Store, covered, in refrigerator. Use in 10 days to begin", "another cake."]
["yeast", "water", "flour", "salt", "sugar", "water", "flour", "sugar"]