Limoncello (italian pronunciation: [limonˈtʃɛlːo]) is an italian lemon liqueur mainly produced in southern italy, especially in the region around the sorrentine peninsula and the coast of amalfi. in northern italy, the liqueur is often referred to instead as limoncino. it is the second most popular liqueur in italy and is traditionally served chilled as an after-dinner digestivo. it is also a popular homemade liqueur, with various recipes available online and in print. limoncello is made from the zest of lemons and usually has a slightly turbid appearance, which originates from the presence of small essential oil droplets suspended in the drink.

Source: Wikipedia