The next step in the process is making the cannabis butter you'll need for the pot chips. This butter can also go into home-cooked edibles like brownies. The first step is decarboxylation, the process of heating marijuana to turn the compound THCa to the psychoactive THC (see page 27 for a more detailed explanation). To activate your marijuana, finely grind the flower and spread it out on a baking sheet. Bake at 40 minutes, stirring regularly, in an oven preheated to 240 degrees.