Meghan McMillin, a registered dietitian based in Chicago, explained that "kombucha is an excellent option for adding a little bubbly to your cocktail. The probiotics can give a nice immunity boost to your drink!" Kombucha can be added to cocktails or enjoyed on its own. "Hoppy" varieties, such as Brew Dr. Clear Mind Kombucha ($3), are popping up on the grocery shelves, and they can help give you the flavour you may be craving without the booze.