Home / Recipes / American / French Oyster Soup American Medium Fannie Merritt Farmer French Oyster Soup Make same as Oyster Soup, adding yolks of eggs, slightly beaten, just before serving. Garnish with Fish Quenelles. Ingredients grocery 1 slice onion 2 blades mace ⅓ cup butter ⅓ cup flour Yolks 2 eggs Salt and pepper Shop Ingredients 🛒 Shop on Instacart Prices and availability vary by location. We may earn a commission from purchases. Required Gear kitchen Large pot * We may earn a commission from these links. receipt_long Instructions 1 No instructions provided