The chef simmered the chicken bones to make a rich stock for the soup.

A flavorful liquid made by simmering meat, bones, vegetables, or herbs in water, often used as a base for soups and sauces.
The stock added flavor to the stew.
She bought beef stock for the recipe.
Vegetable stock is a healthy base.
chicken stock
beef stock
vegetable stock
broth
essence
jus