Note 1:
If you cover the pot as it simmers and skip the hard simmer step: You will have about 16 cups of broth.
If you leave the pot uncovered as it simmers and skip the hard simmer step: You will about 12 cups of broth.
If you cover the pot as it simmers and hard simmer the broth: You will have about 14 cups of broth.
If you leave the pot uncovered as it simmers and hard simmer the broth: You will have about 10 cups of broth.