Here's another great way to infuse coconut oil, butter, or olive oil! Even if you don't own a double boiler (I don't), you can easily make one.
1/4 ounce of cannabis to 1 cup of coconut oil is a good ration to start with, but this can be adjusted for your desired strength. If you're infusing butter, try 1/2 ounce of cannabis to 1 cup of butter.