It may seem trivial, but there is a right way and a wrong way to add pesto to pasta! Usually, when preparing a pasta dish you heat the sauce first, then add the cooked pasta to the sauce with a little of the pasta water to bring it all together. You boil it to thicken and coat the pasta, then correct the seasoning with a little butter, oil, salt and pepper or cheese. When adding pesto to pasta, however, the worst thing you can do is cook it! Exposing pesto to high heat destroys that fresh raw taste that makes pesto so appealing. Instead, cook your pasta as usual, transfer it to a serving bowl and add the pesto and a ladleful of pasta water. Toss it all together, add some grated Parmesan cheese if you like, and enjoy!