- 1 tablespoon olive oil
- 3 large cloves garlic, crushed
- 1 extra large onion, coarsely chopped
- 1 tablespoon tomato paste
- 12 cups water
- 2 medium carrots, coarsely chopped
- 2 rib celery with leaves, chopped
- 1/2 pound cremini or button mushrooms, trimmed and quartered
- 8 sprigs parsley
- 2 bay leaves
- 1 tablespoon kosher salt
- 1/4 teaspoon black peppercorns
- Heat the oil over medium heat in a large stockpot. Saute garlic and onion until lightly browned. Stir in tomato paste and add water. Bring to a boil. Add remaining ingredients, lower heat and simmer, uncovered, 45 minutes (or up to 1 1/2hours). Skim foam and fat from the top.
- Strain the stock in a colander lined with a damp double layer of cheesecloth over a large metal bowl. Discard solids.
- Let cool. Transfer to airtight storage containers and refrigerate for up to 5 days, or freeze for up to 4 months.