Preheat the oven to 250°F.
Pour the mixture into 6 small ovenproof ramekins (or one large bowl), cover them with aluminum foil, and place them in a large roasting pan filled with enough hot water to reach three-quarters of the way up the sides of the ramekins. Heat the pâté in the oven for about 30 minutes or until set. Remove the pâté, cover, cool, and refrigerate, covered, until completely cold.