Sourdough Bread Starter
["1 pkg. dry yeast", "1/2 c. warm water (105~ to 115~)", "2 c. all-purpose flour", "1 tsp. salt", "3 Tbsp. sugar", "2 c. warm water (105~ to 115~)", "1/2 c. sugar", "1 c. all-purpose flour", "1 c. milk"]
["Stir and refrigerate immediately."]
["yeast", "warm water", "flour", "salt", "sugar", "warm water", "sugar", "flour", "milk"]