Directions:
1) Using a double boiler or two pots, melt the butter on low heat. When using two pots, fill the larger (bottom) pot with water and the top pot with butter.

2) Once the butter has melted, add the weed.  The amount of weed will determine the potency.  For example, a "light" batch may use 3/4 of an ounce of weed to 5 sticks of butter.

3) Simmer for 20-30 minutes stirring every 5 minutes.

4) Let sit for 5 minutes then strain the pot butter (using cheesecloth) into a small bowl.

5) Once cool enough to handle, pick up the cheesecloth  and squeeze out the juice.

6) Cover and refrigerate pot butter until semi-solid.

Courtesy of smokingwithstyle.com