One pound of parboiled sweet potatoes; half a cupful of butter ; three-fourths of a cupful of white sugar ; one tablespoonful of cinnamon ; four eggs, whites and yolks beaten separately; one teaspoonful of nutmeg; one lemon, juice and grated rind; one glass of brandy. Let the potatoes get entirely cold, and grate them. Cream the butter and sugar; add the yolks, spice, and lemon. Beat the potato in by degrees, to a light paste; then the brandy; lastly the whites. Bake in a buttered dish, and eat cold.