Wash the asparagus, cut off the woody ends generously. Cut the asparagus into pieces. Clean, wash, shake dry and chop the arugula into smaller pieces. Wash lemon hot and grate dry. Peel or grate the peel in thin strips with a pestle ripper.
Squeeze the lemon.
Cook the pasta in plenty of boiling salted water according to the instructions on the packet until al dente. Add asparagus in the last 4 minutes and cook.
Stir cream cheese and 100 ml pasta water until smooth. Season to taste with 2-4 tablespoons lemon juice, some lemon peel, salt, pepper and nutmeg. Drain the pasta and put it back into the pot. Mix with sauce and rocket.