Combine water with fat and bring to a boil Add matzo meal and salt, and cook until well blended. Remove from heat. Beat in eggs, one at a time. Beat very well. Drop by spoonfulls onto a greased baking sheet. Bake at 450 degrees for 25 minutes, then at 325 degrees for 45 minutes, until puffs are dry. Cut in half. Fill with cream puff filling, sweetened whipped cream or chocolate pudding.

Filling For Cream Puffs: Beat eggs well. Combine sugar with potato starch. Combine with eggs and beat. Add lemon juice and water. Cook mixture in the top of a double boiler until thick, stirring constantly. Cool and fill cream puffs.