Next take a pound of butter and squeeze it in a cloth so as as much as possible to extract all the moisture from it.

Next take a stew-pan--an enamelled one is best--and melt the butter till it runs to oil.

It will now be found that, although the bulk of the butter looks like oil, a certain amount of froth will rise to the top.

This must be carefully skimmed off.

Continue to expose the butter to a gentle heat till the scum ceases to rise.