Tsitsibira is the Greek term for a traditional, homemade ginger beer. It's a popular drink in Greece, particularly on the island of Corfu, where it was introduced by the British and has been made for centuries. The preparation of tsitsibira involves the fermentation of a mixture of water, sugar, lemon, and ginger.
The resulting drink is a fizzy, non-alcoholic (or very low-alcohol) beverage that's both sweet and tangy, with the characteristic spicy flavor of ginger. The fermentation process can take a few days, and the strength of the flavor can be adjusted by changing the amount of ginger or letting it ferment longer.