Limoncello is a popular Italian liqueur made from lemon zest, alcohol, sugar, and water. It is typically served as an after-dinner digestif, either neat or on the rocks. Limoncello is typically made using lemon zest from the Sorrento lemon, a variety native to the Sorrento Peninsula region of Italy. The lemon zest is steeped in high-proof alcohol, such as vodka, to extract its flavor and aroma, and then mixed with a simple syrup made from sugar and water to balance its sweetness. The resulting liqueur is a yellow, lemon-flavored spirit with a strong lemon aroma and a sweet, tangy flavor.