Peel and chop onion and garlic. Peel, wash and chop the potatoes. Fry in 2 tablespoons of hot oil for about 10 minutes. Fry onion and garlic briefly. Season with salt and chilli. Add tomatoes, bring to the boil, cover and simmer for about 5 minutes.
Drain the Texas Mix. Rinse fish, pat dry and dice. Salt and turn in flour. Heat 2 tablespoons of oil in a frying pan. Fry the fish for 2-3 minutes. Wash the coriander, dab off.
Add everything to the stew, warm it up briefly.