Put the rice in a good 1/4 l boiling salted water. Cover and cook over low heat for about 40 minutes
Peel and finely chop the garlic. Mix with vinegar, salt, pepper and sugar. Beat the oil well into the mixture
Skin the sausage and cut into thin slices. Peel onions and cut into fine rings. Dice tomatoes
Drain the rice if necessary. Mix with onions, tomatoes, sausage, olives and the marinade. Leave to stand for at least 20 minutes.
Clean, wash and chop the arugula. Season sausage salad to taste just before serving. Fold in the rocket salad. Slice the parmesan in shavings and sprinkle over it
Mix the sausage salad with rocket salad just before serving so that it does not collapse