Parmesan Broth

Step 1

In a large Dutch oven or heavy pot, heat the oil over medium. Add onion quarters and halved garlic, and cook, flat-side down, until the onion and garlic are lightly brown, about 3 minutes. Add Parmesan rinds, parsley, thyme, peppercorns, bay leaves and 12 cups water; bring to a boil.

Step 2

Once the water comes to a boil, reduce to a simmer. Partly cover and cook, stirring occasionally to prevent the cheese from sticking to the bottom of the pot, until broth is cloudy and tastes strongly like Parmesan, 2 1/2 hours.

Step 3

Strain the broth through a fine-mesh sieve, pressing the vegetables and cheese rinds to extract as much liquid as possible. Let cool, then store the broth in the refrigerator up to 1 week or the freezer up to 3 months.