Often served with or after dessert, they are typically heavily sweetened and un-aged, beyond a resting period during production, when necessary, for their flavors to mingle.
Today they are produced all over the world, commonly served neat, over ice, with coffee, in cocktails, and used in cooking.
[4][5] This can cause confusion as in the United Kingdom a cordial would refer to a non-alcoholic concentrated fruit syrup, typically diluted to taste and consumed as a non-carbonated soft drink.
[10] The European Union directive on spirit drinks provides guidelines applicable to all liqueurs.
[13] Some liqueurs are prepared by infusing certain woods, fruits, or flowers in either water or alcohol and adding sugar or other items.
Anise and Rakı liqueurs have the property of turning from transparent to cloudy when added to water: the oil of anise remains in solution in the presence of a high concentration of alcohol, but coalesces when the alcohol concentration is reduced; this is known as the ouzo effect.