Take 2 drams of fine loaf sugar, 8 grains of ginger, and 26 grains
of carbonate of potass, all in fine powder; mix them intimately in
a Wedgwood’s-ware mortar. Take also 27 grains of citric or tartaric
acid, (the first is the pleasantest but the last the cheapest.) The
acid is to be kept separate from the mixture. The beer is prepared
from the powders thus: take two tumbler glasses, each half filled
with water, stir up the compound powder in one of them, and the acid
powder in the other, then mix the two liquors, when an effervescence
takes place, the beer is prepared and drank off immediately.