Stock, Rich Vegetable

Ingredients

• 1 tablespoon olive oil
• 2 large yellow onions, left unpeeled quartered
• 1 large carrot, coarsely chopped
• 1 celery stalk (with leaves), coarsely chopped
• 2 quarts water
• 3 large all-purpose potatoes
• 3 cloves garlic, unpeeled, crushed
• 1/2 cup coarsely chopped parsley
• 2 bay leaves
• 1/2 teaspoon black peppercorns
• 1 teaspoon kosher salt