Romney's Kendal mintcake - you either like the taste or you loathe it(!) but there's no denying the high energy value of this sweet snack.
Sir Edmund Hillary and Sirdar 'Sherpa' Tensing ate Romney's Kendal mint cake on top of Everest during the first ascent of the mountain in 1953.
Countless expeditions before and since have packed mintcake in their supplies. It remains a snack of choice or dependable 'emergency rations' in many hillwalkers' rucksacks to this day.