- 1 pound shrimp shells and/or heads
- 1 cup coarsely chopped yellow onions
- 1/2 cup coarsely chopped celery
- 1/2 cup coarsely chopped carrots
- 3 garlic cloves, smashed with the side of a heavy knife
- 3 bay leaves
- 2 teaspoons salt
- 1 teaspoon whole black peppercorns
- 1 teaspoon dried thyme
- Rinse the shrimp shells and heads in a large colander under cold running water.
- Put all the ingredients in a heavy medium stockpot. Add enough water to cover by 1 inch. Bring to a boil over high heat, skimming from time to time to remove the foam that forms on the surface. Reduce the heat to medium-low. Simmer for 45 minutes.
- Strain through a fine-mesh strainer into a large bowl. Cool completely. Cover and refrigerate. (The stock can be refrigerated for up to three days. Or freeze in airtight containers for up to two months.)