Take your trimmings, ground bud, whatever you're going to use, put in a jar, do not cover and throw it in the freezer for a few hours.
Get a small pot of water and heat it up on your stove. You don't want the water to boil, but fairly close to it.
Rest a glass mixing bowl on top of the pot of water, add a stick of butter. The heat from the water underneath will warm the mixing bowl and melt the butter.
When butter is fairly soft and melted, add a cup of water to the butter, and keep stirring until it's nice and creamy.
Now take your should be frozen and very dry bud and throw it in the mixture.
Stir for 1 HOUR. Allow the THC to get nice and settled in the butter.
Make sure the water underneath isn't boiling. DO NOT LET THE BUTTER BOIL EVER.
Once you've stirred for an hour, grab your cheese cloth (4 dollars at walmart), and your container to hold the butter. I prefer to use the tin pans that cost under a dollar for a 5 pack. Put the cheese cloth into the container and pour your mixture in.
Lift the cheese cloth up with all the greens inside, and carefully and gently squeeze out as much of the mixture as you can. When your done, throw away the cheese cloth filled with green.
Take your container filled with buttery goodness and put it in the freezer for at least 1 HOUR.
Now, depending on your container, you'll need to drain out the water. The butter will harden up long before the water can freeze, so usually 1-2 hours in the freezer is enough to separate the butter and water. If you use a tin bin, gently poke a small hole in one of the bottom corners and let it drain.
Here's what you should have.
If you're going to use it right away, you can at this point. If you plan to save it for later, just put in fridge and use as needed.
Cookies I made last night. Very potent.
Enjoy!