01 - Thoroughly rinse all vegetable scraps to remove dirt and mold.
02 - Place the cleaned vegetable scraps into a large stockpot and add bay leaves, peppercorns, thyme, parsley stems, garlic, and salt.
03 - Pour in 10 cups of cold water to fully cover the ingredients.
04 - Bring the mixture to a gentle boil over medium-high heat, then reduce heat to maintain a simmer.
05 - Let the broth simmer uncovered for 1 hour, occasionally skimming off any foam that forms on the surface.
06 - Remove the stockpot from heat and allow the liquid to cool briefly.
07 - Strain the liquid through a fine mesh sieve or cheesecloth into a large bowl or container, discarding all solids.
08 - Taste the broth and adjust the salt seasoning if necessary.
09 - Transfer the broth to airtight containers and refrigerate for up to 5 days or freeze for up to 3 months.