Ingredients: 1 1/2 tablespoons butter 1 small onion, chopped 2 medium celery ribs, chopped 1 small or 1/2 medium leek, white part only, sliced, green part...
Ingredients: Fresh ducks blood (about 450 ml or 2 cups) 200 ml (just less than 1 cup) white wine vinegar 4 tablespoons plain flour Various duck parts (offal...