01 - Thoroughly clean all vegetable scraps, removing dirt and mold.
02 - Place the vegetable scraps into a large stockpot and add bay leaves, peppercorns, thyme, parsley stems, garlic, and salt.
03 - Pour cold water over the scraps, ensuring they are fully submerged.
04 - Bring the mixture to a gentle boil on medium-high heat.
05 - Reduce heat to low and simmer uncovered for 1 hour, skimming off any foam occasionally.
06 - Remove stockpot from heat and allow broth to cool briefly.
07 - Strain broth through a fine mesh sieve or cheesecloth into a large bowl, discarding solids.
08 - Taste the broth and adjust salt if necessary.
09 - Transfer broth to airtight containers and refrigerate for up to 5 days or freeze for up to 3 months.