Sweet Potato & Coconut South Seas Soup

I made a scaled-up version of this soup at music festival Bestival when I did a desert island/pirate/18th-century shipboard-inspired pop-up. We had a sea-shanty band, rigging in the tent, napkins made from map fabric (“mapkins”), maps as menus, vintage globes, and costumes created especially for the crew. Bawdy singing and rum were the order of the day.

I have to admit, cooking in a field is a challenge. For a start, at festivals, none of the staff want to work much. They want to be