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This will give the cubes enough time to fully freeze. Make sure the ice cube tray is level in the freezer so none of the broth spills over. Each cube should contain about 2 tablespoons (30 mL) of bone broth. If you’re making something that calls for bone broth, add a couple cubes to the dish while it’s cooking. If you want to thaw the bone broth by itself, set the cubes in an empty pot or pan over medium heat on the stovetop

Summary:
Freeze the bone broth in the ice cube tray overnight. Thaw your frozen cubes of bone broth in a pot or pan on a stovetop.