German Tart

For Pastry
6 tablespoonfuls Crisco 3/4 cupful flour 3/4 cupful potato flour 1 tablespoonful sugar	1/2 teaspoonful mixed spices 1/4 teaspoonful salt 1 teaspoonful lemon juice Cold water
For Mixture
3 apples 3/4 cupful prunes 4 tablespoonfuls sugar	1/2 lemon 1/2 cupful water 1 tablespoonful cakecrumbs

For mixture, peel, core and slice apples, and wash prunes in lukewarm water. Put these into a small saucepan with sugar, grated lemon rind and cold water. Stew slowly until apples are soft. Then remove prunes, and take out stones. Cut prunes in small pieces and return them to apples and cool. For pastry, sift flours, sugar, salt, and spices into basin. Add Crisco and cut it into flour with knife until finely divided. Then rub together lightly with finger tips until as fine as breadcrumbs. While rubbing, keep lifting flour well up in basin so that air may mix with it and Crisco is not made too soft. Add lemon juice and sufficient water to make stiff paste. Divide into two equal pieces. Wet a dinner plate with cold water and leave it wet. Roll out one of the pieces rather thinly, and line plate with it. Sprinkle cakecrumbs over it, then spread on mixture. Roll out the other piece of pastry for a cover. Wet round the edge of the pastry, lay other piece of pastry on, and press edges well together. Trim round with knife or scissors, and mark neatly round the edges. Brush over top with a little water or beaten white of egg. Dredge with sugar, and bake in moderate oven forty-five minutes. Serve hot or cold. The tart may be covered with boiled frosting.