Some alcoholic liqueurs are flavoured with chocolate, such as chocolate liqueur and creme de cacao. An "Espresso Martini" is made with vodka, espresso coffee, coffee liqueur, and sugar syrup. Sambuca is a traditional Italian liqueur flavored with star anise. The whole lemon is used to make marmalade, lemon curd and lemon liqueur. The Black Russian is a cocktail of vodka and coffee liqueur. Mead can also be distilled to a brandy or liqueur strength. Sloe gin is a British red liqueur made with gin and sloes. This may be an allusion to the cocktail's prominent use of amaretto, an Italian liqueur. Some variations also include a shot of amaretto, Bicerin, or other liqueur. Whole cherries preserved in this liqueur were known as "maraschino cherries". Sambuca () is an Italian anise-flavoured, usually colourless, liqueur. It contains two parts vodka to one part coffee liqueur, per IBA specified ingredients. Falernum ( ) is either a syrup liqueur or a nonalcoholic syrup from the Caribbean. Naples is also the home of "limoncello", a popular lemon liqueur. The form can be alcoholic (syrup liqueur) or nonalcoholic (syrup).