Heat the oil in a kettle and add the onions, sweet peppers, carrots, and the hot pepper. Cook, stirring, about 5 minutes. Add the potatoes and cook about 1 minute. Add the tomatoes and salt and pepper. Add the fish stock and bring to the boil.
Combine the saffron with the water and add it to the stock. Add the fennel seeds, turmeric, orange peel, and sugar. Sim