12 Science-Backed Ways to Make the Ultimate Immune-Boosting Holiday Cocktail (Yes, Really!)

7. Green Tea and Matcha: Antioxidant catechins in sipable form

Green tea and matcha are valued for catechins like EGCG, antioxidants shown to support cellular health in many studies. For cocktails, cold-brewed green tea provides a smooth, tea-forward base that mixes well with light spirits and citrus. Matcha lends a vegetal, creamy texture when shaken with milk or milk alternatives; try a matcha-citrus fizz with gin and club soda for a bright, lightly caffeinated drink. Be mindful of caffeine sensitivity and mix quantity—matcha has concentrated caffeine compared with brewed green tea. As with other ingredients, green tea components add antioxidant interest but aren’t a stand-alone immune treatment, so pair them with sensible drinking practices and balanced hydration.

8. Kombucha and Ferments: Fizzy, fermented mixers with caution

Kombucha brings a tangy, effervescent character and is often discussed for its probiotic potential. When used as a mixer, kombucha adds complexity and fizzy lift to cocktails; try mixing a tart kombucha with tequila, lime, and a splash of coconut water for a refreshing holiday take. Keep in mind that alcohol can reduce the viability of probiotic organisms, and commercial kombucha varies widely in sugar and alcohol content. If your goal is probiotic benefit, choose non-alcoholic or low-alcohol fermented drinks consumed separately from significant alcohol intake. For cocktails, kombucha is primarily a flavorful, fermented-forward ingredient that can soften the need for added simple syrup and give drinks a lively finish.