ABSINTHE INGREDIENT is a term that refers to the ingredients used in the production of absinthe, an alcoholic beverage. ANISE (5 letters) and aniseed (7 letters) are two of the main ingredients used in the production of absinthe. ANISE is a flowering plant in the Apiaceae family and its seeds are used as a spice, while aniseed is the dried fruit of the ANISE plant. Both ANISE and aniseed are used to give absinthe its distinctive flavor.