Knead the minced meat with the egg, the peeled banana and the spices. Shape it into balls with moistened hands. Heat the clarified butter in a deep pan and fry the balls brown all over, remove and keep warm.
Sauce:
Sauté the finely diced onion in the remaining frying fat, then add the tomatoes. Peel the mango, remove the pulp from the stone and cut into pieces. Peel and slice the banana. Add both to the tomatoes and simmer a little. Season to taste with salt, pepper, lemon juice and sugar, add a little Tabasco if necessary.
Put the meatballs in the sauce and reheat everything. Before serving, fold in the finely chopped coriander (parsley).