Fish Stock | America's Test Kitchen

Ingredients

• 3 medium onions, chopped coarse (about 3 cups)
• 1 bay leaf
• 1 bunch parsley stems
• 1 bottle dry white wine
• 2 teaspoons sea salt
• 2 quarts water
• 2 large celery stalks, chopped coarse (about 1 1/2 cups)
• 6 sprigs fresh thyme
• 5 dried shitake mushroom, rinced (optional)
• 5 pounds fish frames, cleaned
• 5 large cloves garlic, crushed
• 4 tablespoons unsalted butter, or olive oil
• 7 ounces button mushroom, quartered (about 3 cups)
• 10 whole black peppercorns