To "decarb" the marijuana flower, Garrison recommended setting an oven to 240 degrees Fahrenheit, laying out ground marijuana flower flat on a cookie sheet and baking it for 40 minutes.
Decarbing the cannabis To activate the cannabinoids inside the flower, you must decarboxylate ("decarb") it first: Your cannabutter is now ready. Store it in the fridge in an airtight glass jar.