The purple leaf is a cultivar of Camellia sinensis. Developed over decades by researchers, farmers started growing purple tea in 2011. Just like the similar-coloured superfoods acai berries, blueberries and pomegranates, purple tea leaves contain super antioxidants called anthocyanins. Studies have shown anthocyanins to be effective at fighting free radicals, improving immune health, reducing inflammation, and slowing brain function degeneration.