Crock pot method. 2.5 Oz Marijuana in 2lbs Unsalted butter and 3 cups water. Simmer in crockpot on LOW for 6 hours. Subsequently, you can use 1 Oz marijuana in 1Lb of butter for a smaller batch. Strain through cheese cloth, Place in Fridge for 10 hrs. Remove water, cut into measured chunks for easy and accurate servings. Substitute the canna butter for real butter in ANY recipe or enjoy it on toast!