4 eggs, separated
1/4 cup sugar
1 T vegetable oil
1 t lemon extract
1/2 cup sugar
2/3 sifted cake flour
1 t baking powder
1/4 t salt
1 to 2 t powdered sugar
Creamy Lemon Filling
1/2 cup flaked coconut
1/2 t water
1 or 2 drops yellow food coloring
sprigs of fresh mint
Grease bottom and sides of a 15x10x1-inch jellyroll pan with vegetable oil; line with wax paper, and grease and flour wax paper. Set aside.
Beat egg yolk in a large bowl at high speed of mixer until thick and lemon colored; gradually add 1/4 cup sugar, beating constantly. Stir in vegetable oil and lemon extract; set aside.
Beat egg whites until foamy; gradually add 1/2 cup sugar, beating until stiff but not dry. Fold beaten egg whites into yolks. Combine flour, baking powder, and salt; gradually fold into prepared pan. Bake at 350 for 8 to 10 minutes.
Sift powdered sugar in a 15x10-inch rectangle on a towel. When cake is done, immediately loosen from sides of pan, and turn out on sugared towel. Carefully peel off wax paper. Starting at narrow end, roll up cake and towel together; let cake cool completely on a wire rack, seam side down.
Unroll cake. Spread cake with half of Creamy Lemon Filling, and carefully reroll cake, without towel. Place cake on serving plate, seam side down; spread remaining filling on all sides.
Combine coconut, water, and food coloring in a plastic bag; close securely, and shake well. Sprinkle colored coconut over cake roll. Refrigerate cake roll 1 to 2 hours before serving. Garnish cake platter with sprigs of fresh mint.
Creamy Lemon Filling
1 (14-oz) can sweetened condensed milk
1 to 2 t grated lemon rind
1/3 cup lemon juice
5 drops yellow food coloring
1 1/2 cups frozen whipped topping, thawed
Combine sweetened condensed milk, lemon rind, lemon juice, and food coloring; stir well. Fold in whipped topping.