Take of tartaric acid, ½ oz.
loaf sugar, 3 oz.
essence of lemon, ½ drachm.
Powder the tartaric acid and the sugar very fine, in a marble or
wedgewood mortar, (observe never to use a metal one) mix them
together, and pour the essence of lemon upon them, by a few drops
at a time, stirring the mixture after each addition, till the whole
is added, then mix them thoroughly, and divide it into twelve equal
parts, wrapping each up separately in a piece of white paper. When
wanted for use, it is only necessary to dissolve it in a tumbler
of cold water, and fine lemonade will be obtained, containing the
flavour of the juice and peel of the lemon, and ready sweetened.