Cook the pasta in boiling salted water for about 10 minutes until al dente. Peel and halve the shallots. Wash, clean and slice the mushrooms. Drain noodles, rinse with cold water and let them cool down. Heat 2 tablespoons of marinade oil from the antipasti in a pan. Sauté the shallots in it. Sprinkle with sugar and allow to caramelize.
Deglaze with vinegar and 4 tablespoons of water. Stew in the stock for 3-5 minutes. Add mushrooms shortly before the end of the cooking time. Clean, wash and halve the tomatoes. Mix noodles, shallots and mushrooms with the stock, tomatoes and antipasti plus remaining oil. Pluck basil leaves from the stems and fold into the salad