I like to save leftover chicken carcasses, bones, and vegetable trimmings in the freezer, and when I have enough I make a batch of broth.
The bone broth should gel upon refrigeration, however if it does not, it is still very nutritious! Just use less water and/or more collagen-rich bones.
To easily remove fat from the broth, refrigerate and remove the hardened layer on top using a spoon. Leaving the layer of fat on top helps seal and preserve the broth.