Fish Stock | Williams Sonoma

Ingredients

• 2 leeks, trimmed and carefully washed
• 4 lb. fish heads (gills removed), bones and trimmings
• 2 yellow onions, sliced
• 2 carrots, sliced
• 2 celery stalks with leaves, sliced
• 6 fresh parsley sprigs
• 3 fresh thyme sprigs
• 1 bay leaf
• 4 quarts water
• Salt, to taste