1x 8th
2/3 of a stick of butter (2/3 of 250g stick)
water in a pan.

melted butter, reduced heat.
ground weed good, added to mixture. cover
stir occasionally, till all dark and oily looking (like a think layer of water ON TOP of the simmering green buttery stuff.) about and hour or so.
cooled slightly, strained, squeezed and popped into the fridge for a few hours.

i have posted this somewhere, but the thread got moved, doh!