How is clarified butter made

Clarified butter was once a popular delicacy, though it is no longer in vogue to the same extent. It is ideal for making dishes that benefit from a buttery flavour but need 

To prepare it, small nuggets of unsalted butter are melted slowly in a deep saucepan. The water in the butter evaporates, causing the milk solids to sink to the bottom of the pan, and a foam rises to the surface and is skimmed off. The clear, yellow melted butter is then poured off to leave the milk solids at the bottom of the saucepan, to be discarded. 

The smoking point of butter is the temperature at which partial combustion starts, yielding smoke. An oil or fat is only safe to cook with below its smoke point. 

---