Considering the appalling weather, it wasn't the best day to be selling cold food - although I understand they also do fish cakes which is what I'll be trying next time! But the main offering is based on the Caribbean dish 'souse' which involves pickling meat and veg in lime juice, herbs and spices. It's usually made with pork and served in Barbados with black pudding and breadfruit.
The stall sells several versions, with chicken, fish, pork or shrimp as the main ingredients, as well as a veggie option with quinoa, lentils and something called freekeh which I had to Google. Prices are £5 for the shrimp option, a quid less for the others, and for that you also get a portion of spicy potato or green banana to go with it.
I'm never going to love the name I'm afraid, the purist in me cringes every time I see those two ks next to each other, but I will probably manage to overlook it in favour of a tasty, healthy snack.