Sourdough Bread
["1 pkg. dry yeast", "2 1/2 c. warm water", "1 tsp. sugar", "1 Tbsp. salt", "2 c. flour, sifted"]
["Sprinkle yeast in 1/2 cup warm water.", "Let stand until dissolved.", "Stir well into large bowl with cover.", "Add remaining ingredients and stir well.", "Cover and let stand for 3 days at room temperature.", "Stir daily."]
["yeast", "water", "sugar", "salt", "flour"]