Cook the pasta in 4-5 l boiling salted water (approx. 1 teaspoon salt per litre) according to the instructions on the packet. Clean the mushrooms, wash them briefly if necessary and cut in half. Fry bacon in a pan without fat until crispy, drain on kitchen paper.
Fry the mushrooms in the hot bacon fat for about 10 minutes until all the liquid has evaporated. Season with salt and pepper.
Mix 4 tablespoons vinegar, salt and pepper. Fold in the oil. Drain noodles, rinse with cold water, drain and immediately mix hot with the marinade.
Wash and halve the tomatoes. Clean, wash, spin dry and pluck the arugula. Peel onion and cut into strips. For the pesto cream, mix yoghurt, salad cream, pesto and 2 tbsp vinegar.
Season with salt and pepper. Mix pasta, mushrooms, tomatoes and onion with the pesto cream.
Break the bacon into pieces. Mix with rocket salad. Season to taste with salt and pepper. Slice Parmesan cheese over it.