A recipe for making roll jelly cake – 1 cup granulated sugar. 1-1/4 cups flour. 4 egg yolks. Pinch of salt. 1/2 cup boiling water. 1 large teaspoonful baking powder. The yolks of eggs left from making “Pennsylvania Dutch Kisses” may be used for this cake by the addition of an extra yolk of egg. Beat the yolks quite light, then add the sugar and beat until light and frothy. Add the flour sifted with the baking powder and salt. Lastly, add the half cup of boiling water. Bake in a rather quick oven from 25 to 30 minutes in two square layer cake pans. Cover cakes first ten minutes until they have risen. When baked turn cakes out of pans on to a cloth. Take one at a time from the oven, spread as quickly as possible with a tart jelly, either currant or grape, and roll as quickly as possible, as when the cakes become cool they cannot be rolled without breaking. Roll up in a cloth and when cool and ready to serve slice from end of roll.