1.Lay a clean tea towel down on the bottom of a large crockpot. This will create a buffer between your mason jars and the crockpot, potentially preventing any jar moving or cracking during cooking.
2.Fill your crockpot with enough warm water to cover the mason jars you plan on using in the water bath. Be careful not to overflow. If you have a shallow crockpot, aim for the water to reach at least 3/4 the way up the jar.
3.Place a digital thermometer in the water and set the crockpot to high heat. When a temperature of around 185°F is reached, turn the heat to low.
4.While the water bath is heating up, measure, and decarb your cannabis flower by baking it in an oven set to 240° F for 40 minutes. If needed, click here for a full cannabis decarboxylation tutorial.
5.Evenly divide the butter between two mason jars. We recommend using 16-ounce wide-mouth mason jars, two sticks of butter fit inside one jar perfectly.
6.Divide the decarbed cannabis flower between the two jars.
7.Wipe the rim of the jars with a clean towel and place the lid on, tighten the metal ring to finger-tip tightness. It does not have to be tightened extremely tight.
8.Carefully place the jars into the water bath, place the lid on the crockpot, and cook for 4 hours. You want to maintain a temperature of around 185°F the entire time.
9.After 4 hours, carefully remove the jars from the water bath and allow them to cool enough to handle. You are now done with the crockpot and can discard the water bath.
10.Prepare a straining area with new, clean mason jars and a strainer, paper filter, or cheesecloth. Pour the contents of the mason jar through the strainer to separate the plant-matter from the infused butter.
11.Add the strained butter to whatever jar you would like to store it in. For this step, we recommend a flexible container or wide-mouth mason jar. You can also use butter molds here if desired. Place the container in the refrigerator and allow it to cool completely.
12.During refrigeration, the infused butter will harden and solidify. Remove the solid block of butter and drain the remaining liquid which is the unwanted, leftover water and milk solids.
13.Your cannabis butter is ready to enjoy! Store this in the refrigerator according to the expiration date on the butter you used, or store for even longer in the freezer.
14.If you are storing the butter in the fridge or freezer, never use the microwave to soften or thaw the butter it as it could destroy the cannabinoids and ruin the final product.