Put butter in a cast iron pot or any thick-walled pot and melt over the lowest heat possible. Once milk solid begin to float to the top skim them off. Continue the process until the butter is amber in colour and transparent, take off the heat. It takes about 45-50 minutes to clarify 2 lbs of butter. (Roughly 25 minutes per pound of butter.) You should be able to see the bottom of the pot.