Doctor

The doctor cocktail is a pre-prohibition era cocktail that traces in drink guides to as far back as 1917, when it appeared in Hugo R. Ensslin's Recipes for Mixed Drinks. As originally described the cocktail called simply for Swedish Punsch mixed with lime juice. Like many older cocktails, many variations with the same name have been created over time, and drink guides sometimes listed multiple variations in the same book. The core of the cocktail consists of Swedish punsch and some variation of citrus , with later variations skewing away from lime and also adding Jamaican rum. After Ensslin's recipe, the doctor cocktail was also listed in Robert Vermiere's 1922 drink book where it dropped the use of lime, calling for 2 parts Swedish punsch, 1 part orange juice, and 1 part lemon juice (2:1:1 ratio).

Source: Wikipedia