Strong alcoholic beverage made of almost neutral spirits, flavored with herb mixtures, fruits, or other materials, and usually sweetened. The name derives from the Latin word to melt. Liqueur can be produced by either macerating the flavoring elements in alcohol, which is then distilled or by percolation, which passes heated alcohol through the flavorings. In both processes, the flavored spirit is sweetened with sugar, syrup, or honey; coloring, if desired, can be added. The mixture is filtered, aged if preferred, and bottled. The processes and ingredients are often strictly guarded secrets. No more than three people at one time are said to know the formula for making Benedictine. The alcoholic content of liqueurs usually ranges from about 34 to 60 proof, but can reach 100 proof. Liqueurs are usually served after dinner and sipped from small glasses, a process said to aid digestion.