Clarified butter is also called drawn butter.  Simply defined, clarified butter is unsalted butter that has the milk solids and water removed so all that remains is pure liquid golden-yellow butterfat. 

Clarified butter, also sometimes referred to as drawn butter, is a form of “clean” butter where certain solids are removed and only the pure butterfat remains. Unsalted butter is slowly melted, allowing the milk solids to separate from the transparent golden liquid and for any water to evaporate.