Why do I need the pasta water? We are always told to not rinse cooked pasta, because it removes starches that help sauces cling. And they’re right, except… let the drained cooked pasta sit for more than a minute before serving and it seizes up into one solid mass. So return the pasta to the pot and add the pasta water—the starchy pasta water—and toss with tongs. Suddenly, the pasta is all nice individual strands again. Drain and plate immediately. You’re welcome.