Peel the grapefruit so that the white skin is completely removed. Remove the fillets with a sharp knife between the parting skins. Squeeze the juice out of the parting skins. Clean, wash and cut the chilli pepper into rings. Mix juice, vinegar and chili. Season with salt, pepper and sugar. Fold in olive oil
Clean the salad, wash and drain well. Cut avocados in half, remove stone. Remove the fruit tartar from the skin and cut into slices. Mix salad, grapefruit, olives and avocado. Drizzle vinaigrette over it
Peel and finely chop the garlic. Peel the prawns, except for the tail fin, and remove the intestines. Wash the shrimps and dab them dry. Heat the oil in a pan and fry the prawns for 2-3 minutes while turning. Add garlic shortly before the end of the frying time. Season with salt and pepper. Arrange salad in small bowls with three prawns each