This section is from the "Elixirs And Flavoring Extracts. Their History, Formulae, & Methods of Preparation" book, by John Uri Lloyd. Also available from Amazon: Elixirs and flavoring extracts,: Their history, formulae, and methods of preparation;
Fluid extract of lupulin, 2 fluidounces.
Simple elixir, 14 fluidounces.
Alcohol, 1/2 fluidounce.
Carbonate of magnesium, a sufficient quantity.
Triturate the fluid extract of lupulin in a capacious mortar with carbonate of magnesium in amount sufficient to form a creamy mixture, then gradually add the simple elixir, stirring well; permit the mixture to macerate in a closed vessel for twelve hours, and filter. Lastly, mix the filtrate with the alcohol.
Each fluidrachm of the finished elixir represents such an amount of seven and one-half minims of fluid extract of lupulin as will dissolve in the menstruum.
Elixir of lupulin was introduced by Prof. C. Lewis Diehl in 1872.