Jelly Roll
["5 eggs, separated", "2 Tbsp. lemon juice", "1 c. sifted cake flour", "1 tsp. baking powder", "1/4 tsp. salt", "1 tsp. vanilla", "1 1/2 c. jelly or jam"]
["Separate eggs.", "Beat egg yolks; add 1/2 cup sugar and 1 teaspoon vanilla.", "Beat until lemon color.", "In small bowl, mix 1 cup cake flour and 1/4 teaspoon salt.", "Sift together, then put in egg mixture.", "Set aside.", "Now, beat egg whites until real stiff. Beat until stiff enough to hold peaks, then fold in egg mixture with flour.", "Put on foil covered cookie sheet.", "Bake at 350\u00b0 for 15 minutes.", "Turn upside down on powdered sugar dusted towel.", "Take off foil and roll up.", "When cool, put jelly or jam on it."]
["eggs", "lemon juice", "cake flour", "baking powder", "salt", "vanilla"]