Mix dry ingredients together in a large glass bowl. Gradually drizzle oils in and mix until evenly distributed. Spoon in to oven-proof molds or a metal ice cube tray. Press very, very hard. Bake for 2-3 hours at very low heat (no higher than 200 degrees F). Let cool on baking sheet before removing, as they are very fragile until cool. Cure for 2 weeks before using. Store in glass jars.