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Spaghetti. Best to take a mug-full of the starchy pasta water and leave it on the side, then drain your pasta but not fully: chuck it in a colander, let most of the water drain off but don't let it sit in the sink. When you lift it up, the pasta should glisten a little bit with water but not be sat in a pool. Then chuck that in your sauce and give it a stir for a minute, loosen the sauce with starch water if too dry.
Trust me, give it a go, you'll never look back. When pasta starts cooling and retracting, you'll prefer it to have sucked up some sauce rather than air.
Oh, talking about the spaghetti or the dumpling pasta?