Preheat an oven to 225°F/107°C.
Melt canna-butter or oil over low heat or in the microwave.
Using a gloved hand, carefully mix and fold dry ingredients together slowly in a large mixing bowl.
Peel garlic. Using a microplane, grater or garlic press, mince, grate or press cloves and stir into melted butter.
Stir miso paste into melted butter mixture.
Whisk it to ensure the cannabinoids are evenly distributed throughout the fat. Slowly drizzle 1/4 of the butter mixture into the mixing bowl in a thin stream. It is important that you coat all the ingredients UNIFORMLY. Use one gloved hand to carefully stir and fold the mixture while pouring the butter with the other hand. Mix thoroughly.
Repeat the previous step 3 more times, each time incorporating 1/4 of the mixture, until you have poured all of it into the large mixing bowl.
Spread mixture evenly onto two half-sheet pans lined with parchment paper.
Bake for 75 minutes. After 30 minutes, rotate the pans and move them to different racks in the oven.
Remove from oven, let cool, then store in airtight container. To keep long-term (more than a few weeks), store in freezer.