4 eggs
1/2 c. sugar
1 tsp. water
1 tsp. vanilla
3/4 c. cake flour
1 tsp. baking powder
1/2 tsp. salt

Grease jelly roll pan. Line with waxed paper. Beat eggs until thick and lemon colored; gradually adding sugar. Beat until thick. Stir in water and vanilla. Combine flour, baking powder, and salt; add to egg mixture and beat well. Spread batter evenly in prepared pan. Bake at 400 degrees for 10 minutes. Sift 2 or 3 tablespoons powdered sugar on a linen towel. When cake is done, loosen from side of pan and turn out on sugared towel. Peel off wax paper. Roll cake in towel. Cool well with seam side down. When cake has cooled, unroll cake and remove towel.

LEMON FILLING:

1/4 c. butter
1 c. sugar
1 tbsp. grated lemon rind
1/2 c. lemon juice
1 tsp. cornstarch
2 eggs, beaten
2 egg yolks, beaten

Melt butter in saucepan over low heat; add remaining ingredients. Cook until mixture thickens and comes to boil. Cool. Spread on cake and reroll. Chill for 1 hour.