Sponge Cake
["6 eggs", "1 c. sugar", "1 1/2 tsp. vanilla", "1 1/2 tsp. lemon juice, if desired", "pinch of salt", "1 c. flour"]
["Separate whites and yolks of eggs.", "Beat whites until stiff, yolks until thick and lemon colored.", "Add 1 cup sugar to yolks and beat until completely mixed.", "Add vanilla, lemon juice and salt. Fold yolk mixture into whites very gently.", "Lastly, add flour, folding in gently.", "Use large buttered and floured tube pan.", "Bake in 325\u00b0 oven 45 to 60 minutes.", "(A smaller version may be made with 4 eggs, 7/8 cup sugar and 7/8 cup flour.)", "Also can be used for cupcakes."]
["eggs", "sugar", "vanilla", "lemon juice", "salt", "flour"]