Sumo is the little chocolate bar with the big kick, according to Sumo Foods. Each 17g bar is made from guarana-enhanced Belgian chocolate that aims to give consumers an immediate energy fix. The bars come 20 to an outer and rrp is 49p.

Mike Sears, director of Sumo Foods, says: “Sumo is first and foremost a functional bar. Its guarana content means it quickens perception, increases stamina, delays sleep and can even help recovery from a hangover. It contains just 90 calories and one bar has the same effect as a can of an energy drink.

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