Return the pan to the heat with a drizzle of oil. Fry the onion for 5 min. Add the garlic, coriander cumin powder, a pinch of chipotle (spicy!), the smoked paprika and tomato paste. Cook for 1 min. Add the chocolate, oregano, chopped tomatoes, measured water, stock cube, sugar, drained beans, corn, salt and pepper. Simmer for 10 min. Add a splash of water, if needed.