When you have a whole chicken, save the carcass.
If you don’t have them both at the same time, both can be frozen till you are ready.*
Place the veggies and carcass in the crock pot with garlic and salt. Fill the crock pot with water till full. Let sit on low for 6-8 hours. Then strain.
Measure in 1 or 2 cups and put in glass jars (leave room at the top) and store in freezer. Enjoy!