Sambuca (Italian pronunciation: [sam'bu:ka]) is an Italian anise-flavoured, usually colourless, liqueur. Its most common variety is often referred to as white sambuca to differentiate it from other varieties that are deep blue in colour (black sambuca) or bright red (red sambuca). Like other anise-flavoured liqueurs, the ouzo effect is sometimes observed when combined with water.
Sambuca is flavoured with essential oils obtained from anise, star anise, liquorice and other spices. It also contains elderflowers. The oils are added to pure alcohol, a concentrated solution of sugar, and other flavouring. It is commonly bottled at 42% alcohol by volume.