01 - Place the assorted vegetable scraps into a large stockpot.
02 - Incorporate bay leaves, black peppercorns, thyme, and salt into the stockpot.
03 - Pour cold water over the scraps and seasonings until fully covered.
04 - Bring the mixture to a boil over high heat.
05 - Reduce heat to a gentle simmer and cook uncovered for 1 hour, skimming off any foam occasionally.
06 - Remove from heat and allow to cool for a few minutes.
07 - Strain the broth through a fine-mesh sieve or cheesecloth into a large bowl or container, discarding solids.
08 - Taste the broth and adjust salt or seasoning as desired.
09 - Use the broth immediately or cool completely before refrigerating up to 5 days or freezing up to 3 months.