Mix an ounce of oil of peppermint with a pint of alcohol. Then
colour it by putting in some leaves of green mint. Let it stand
till the colour is a fine green; then filter it through blotting
paper. Drop it on sugar when you take it.
Essence of pennyroyal, mint, cinnamon, cloves, &c. may all be
prepared in the same manner by mixing a portion of the essential
oil with a little alcohol.
You may obtain liquid camphor by breaking up and dissolving a lump
in white brandy or spirit of wine.