If you’re a startup planning to enter a market awash with already established players, then you could do worse than to take a leaf out of Huib van Bockel’s book. Formerly of Red Bull, van Bockel is the founder of energy drinks company Tenzing, which he set up in 2015 as an alternative to the artificial energy drinks that existed on the market, that are heavily based around synthetic caffeine, artificial mood boosters, and of course, plenty of sugar.