My canna butter:
I put roughly an oz of trim fro each stick of butter. I simmer on high heat in my crockpot for about an hour stiring it initially with an electric beater. I stir every 30min with the beater again. after the first hour, drop it to medium heat. I usually run mine for 6-8 hours mixing it every 30 min. Then run it through the cheese cloth and let it settle. Most bags of chocalate chips have a recipe on tha back that calls for 2 sticks of butter and I have had great results with that set up. Good luck.