Serve with a sprinkling of grated Parmesan, if possible.
Remarks
The trick in this recipe is to cook the asparagus and farfalle together. That's why we use farfalle, as it cooks quite quickly (about 5 minutes), which is about the same time as the asparagus.
If you want to use other types of pasta that take longer to cook, start with them and then add the asparagus, 4 minutes before the end.