sweet potato (cut into small cubes) • goat's or feta cheese (cut into small cubes) • whole red chilli (finely chopped) • dried chilli flakes • cinnamon powder • finely chopped coriander • crushed garlic • spring onions (chopped) • toasted cumin seeds (crushed) • fresh filo pastry • unsalted butter • rock salt and cumin seeds to sprinkle on pastry