Chacha is a Georgian pomace brandy, a clear and strong (ranging between 40% alcohol for commercially produced to 65% for a home brew), which is sometimes called "Wine vodka", "grape vodka", or "Georgian vodka/grappa".
It is made of grape pomace (grape residue left after making wine). The term chacha is used in Georgia to refer to the grape distillate. It may be also produced from unripe or wild grapes. Other common fruits or herbs used are figs, tangerines, oranges, mulberries or tarragon.
Chacha is a Georgian pomace brandy, similar in many respects of Italian grappa, though it is sometimes called Georgian "vodka." Pomace consists of the leftover skins, pulp, and seeds from the winemaking process. The origins of chacha are murky, with some claims that it has existed for about 1000 years in Georgia. It was commonly made in makeshift stills at homes and generally wasn't commercially produced until the 20th century. It is potent, often with a 40-60% ABV, and sometimes is aged in qvevri or oak barrels. For centuries, it has been claimed that chacha has medicinal properties, a remedy for a long list of ailments.