PLANT- BASED BCAA - For this blend we have added 1500mg of BCAA derived from corn with a ratio of 2: 1: 1. It's the world's first Natural Energy with plant-based BCCA. TENZING Natural Energy is a plant-based sparkling drink with the triple hit of natural caffeine, electrolytes and vitamin C from Acerola cherries, inspired by the energising brews of Himalayan Sherpas.