This section is from the book "Soyer's Standard Cookery", by Nicolas Soyer. Also available from Amazon: Soyer's Standard Cookery.
Take one pound of butter and melt it in a stewpan large enough to hold twice the quantity. Remove the scum which rises, and when the butter is clear strain through a muslin. It is then ready for frying crotonnes and for cooking sauces, etc. The clarifying has the effect of freeing the milk from the butter, which thus prevents the burning of articles cooked in the butter.
 
Continue to: