Cook the pasta in 4-5 l boiling salted water (approx. 1 teaspoon salt per litre) according to the instructions on the packet. Meanwhile peel onion and garlic, dice finely. Chop the tomatoes coarsely. Mix vinegar with salt, pepper and 1 pinch of sugar.
Strongly beat down the oil. Stir in tomatoes, onion and garlic.
Wash the arugula, spin dry, cut smaller if necessary. Wash basil, shake dry and cut coarsely.
Drain the pasta and chill in cold water. Mix with the vinaigrette and leave to stand for about 30 minutes.
Chop the parmesan into thin shavings. Fold in basil, rocket salad and parmesan. Season salad with salt, pepper and sugar.