Boil the water and butter, sift in the flour with the salt and cayenne; stir and cook until the mixture cleaves from the side of the pan. When the mixture has slightly cooled, add the eggs, one at a time, beating in each egg thoroughly before another is added. Lastly, add the cheese. Drop, by teaspoonfuls, into hot fat and fry a golden brown. Drain on soft paper and serve piled on a folded napkin.