Lemon liqueur

It is light to bright lemon yellow in color; intensely lemony in flavor; clear, cloudy, or opaque; and sweet or sweet and sour.

Lemon zest is used, water may be added, and the liqueur is not sour.

Lemon zest is soaked in high proof neutral spirits to extract from it the lemon oil (an essential oil).

A higher proof alcohol maximizes extraction of the lemon flavor, whereas darker alcohols add complexity of flavor.

In Italy, especially in Campania, lemon liqueur is consumed as a chaser (ammazzacaffè) to coffee.