A cordial is any invigorating and stimulating preparation such as a peppermint cordial. The term derives from obsolete medical usage, as various beverages were concocted which were believed to be beneficial to one's health, especially for the heart (cordialis in Latin).
In the United Kingdom and Australia, cordial is an extremely sweet (usually entirely artificial) non-alcoholic drink concentrate that is mixed with water to taste. This cordial is said to have some medical properties for stomach problems.
According to Irving Hirsch:
Cordials are usually produced with spirits as a base. The best cordials have brandy as a base. The flavor is imparted to the cordials by first distilling the fruits or herbs in order to produce an extract, then distilling the brandy with the extract, thereby producing a clean and perfectly homogenous flavor.
Please check out some of our known recipes for cordials:
Recipes: Cordials and Liqueurs