US drinks business First Bev has announced it has acquired a controlling stake in the California-based kombucha firm Health-Ade. Founded in 2012, Health-Ade markets itself as a producer of “feel-good, bubbly beverages” with gut-health benefits, such as kombucha, prebiotic sodas and cocktail mixers, and has annual retail sales of over $200 million. “I couldn’t be more excited for Health-Ade to have someone with Jack’s experience and credentials step into the …