1-Gather all ingredients: gather all ingredients and prepare the bones by roasting them in the oven at 400°F for 30 minutes to deepen the flavor.

2-Transfer: Transfer roasted bones to a large stockpot; add chopped vegetables, bay leaves, peppercorns, and cold water.

3-Simmer: Slowly bring to a simmer over medium heat, avoiding boiling to keep the stock clear.

4-Skim: Skim foam and impurities from the surface during the first 30 minutes of simmering.

5-Simmer gently: Reduce heat to low and let the stock gently simmer for 4 to 6 hours to extract maximum flavor.

6-Strain: Strain the stock through a fine mesh sieve, discarding solids, and for clarity, strain again through a coffee filter or cheesecloth.

7-Cool: Cool the stock promptly by placing the pot in an ice bath to prevent bacterial growth, then store in airtight containers.

8-Variations: This method can accommodate substitutions like vegetable stock base for vegan options or added herbs for flavor variations; cook for 3 to 3 1/2 hours, allowing the liquid to reduce by about half, as per the recipe details.