Medallions of Ahi Tuna with Potato-Shallot Cake Dec 31, 1999 INGREDIENTS:4 oz. portabella dice (see recipe) 2 Idaho potato-shallot cakes, each cut into 4 wedges (see recipe) 1 lb. spinach, cooked 8 3-ounce portions of tuna medallions 1 ½ oz. foie gras, (4 pieces) 4 oz. red wine...