Botanicals for cocktails: hibiscus flower. Ingredients Hibiscus. How to use Cool the cup with ice and discard any excess water. Perfume the rim by rubbing the skin of a citrus fruit or other fruit and incorporate it into the cup. Add this botanical to your taste, pour in 50 ml of alcohol (approx. 1 cup of coffee), but not more than 70 ml and finally the juice or soda.