In the meantime, wash the vegetables and cut them into small pieces. Drain the corn. Chop the tuna but keep the oil to fry.
Put the tuna with the oil in a heated pan, add the leek, zucchini, leek and garlic and fry vigorously while stirring. Before it browns too dark, add the paprika. Fry this briefly and add the well-drained rice. With the little water that gets into the pan from the rice bag, the whole thing is now steamed a little. Season with salt, pepper, paprika and chilli. Add the creme fraich and the ketchup and continue to stir until it becomes a creamy consistency. Finished