I found this one at Nourishing Days. She has no salt in it, I threw some in, but not enough so I'll have to add more salt when I use it, but this was so easy. My crockpot cooks way fast so I only had it on for 16 hours before the smell permeating my whole entire house drove me crazy, but it was done probably before that time. Very easy! I will do this again.
But, how was I going to store it? They said either keep in fridge and take out as needed (I use it so infrequently, I doubted I could use it before it went bad) or freeze it in jars (but when I do use it, I tend to only use 1/2 cup to 1 cup increments.)
So, I decided to measure my ice cube tray. One ice cube filled to the brim was only slightly more than 1/8 cup. Perfect! So 8 cubes equals a cup.
So, I froze the stock in the ice cube trays and stored them in a ziploc bag. I'll pull out just enough for my recipe. I've heard anything calling for water can be replaced with stock to make it more nutritious and I've also heard old chickens make the best stock, so when my layers are ready to be culled I think I'll be making lots of this and using it instead of water.