Pasta should never, ever be rinsed for a warm dish. The starch in the water is what helps the sauce adhere to your pasta. The only time you should ever rinse your pasta is when you are going to use it in a cold dish like a pasta salad or when you are not going to use it immediately.
When left unrinsed, the starchy coating can make the pasta gummy and clump together. Stir-fry: When using spaghetti or any kind of Asian-style noodles — like soba, udon, or rice noodles — for stir-fry, they should always be rinsed after cooking.
Do Italians rinse pasta after cooking it? No, they don't. Italians usually don't rinse pasta after cooking it because the starch released is useful for binding the sauce. In many first course recipes, in fact, you have to add a little cooking water to mix the condiment with the pasta.
Rinsing your pasta also stops the cooking process, which will ensure that your pasta isn't overcooked and mushy. By washing away the starchy film on the pasta, you're guaranteeing that when you toss the pasta with your other salad components and dressing, the pasta won't stick together or clump.
You want to keep what's making them stick right where it is; they'll loosen up as soon as you sauce them up, no worries. Moral of the story: Regardless of whether the dish you're making is going to be served warm or you're making a cold pasta salad, do not rinse your pasta.
Do Not Rinse. Pasta should never, ever be rinsed for a warm dish. The starch in the water is what helps the sauce adhere to your pasta. The only time you should ever rinse your pasta is when you are going to use it in a cold dish like a pasta salad or when you are not going to use it immediately.
Keep some pasta water back to add to your pasta dish
As most chefs and home cooks know, when you drain your pasta, it's a good idea to keep back a cup of the cooking water to add to the sauce. Not only will this thicken the sauce, but it will also help it to stick to the pasta.
If you're going to be eating your noodles cold or at room temperature, then you're probably going to want to rinse them after cooking. Running pasta under cold water after boiling will help to stop the cooking process, preventing your pasta salad from becoming mushy.
Rinsing the pasta after cooking
Shocking pasta with cold water after it comes out of the pot will indeed stop the pasta from cooking more, but it will also rinse away all the delightful starch that helps sauce cling to noodles. To avoid the overcooking factor, see rule #5.
Plenty of cooking pros—and maybe even your grandma—say yes, because a splash of oil helps stop the noodles from sticking together once you drain them. But plenty of other cooking pros (and maybe your other grandma) say no way, because a splash of oil makes it harder for the sauce to stick to the noodles.
In Italy, the golden rule for cooking pasta is 1, 10, 100 or 1 liter of water, 10 grams of salt for every 100 grams of pasta. Converted for American cooks, the rule should be 1/3, 3, 30, referring to 1/3 oz of salt, 3 oz of pasta and 30 oz of water.
The idea is to get the pasta water to taste salty, like the ocean. Adding salt to the water not only adds flavor but it helps cook the pasta to perfection. Salt raises the boiling point of water, making the pasta cook at a higher temperature. You'll find that your pasta noodles come out with better consistency.
Olive oil is said to prevent the pot from boiling over and prevent the pasta from sticking together.
Just one bit of caution when cooking pasta in its sauce: Because the pasta-cooking water is salted, there's a risk of the dish becoming too salty if you keep adding and reducing ladlefuls of it.
Contrary to popular myth, adding oil into the water does not stop pasta sticking together. It will only make the pasta slippery which means your delicious sauce will not stick. Instead, add salt to the pasta water when it comes to the boil and before you add the pasta.
"Although you can definitely cook pasta in cold water, you risk overcooking (it) because the starch has more time to release," she told TODAY. "It's not as precise. In other words, the pasta had more time to absorb water, causing it to be mushy.
Drain the pasta, but never rinse it: you want to keep the starches on its surface, to help the sauce stick to it. Also, you don't want to stop the cooking process, which continues until the pasta is plated.
In fact, starting your pasta in cold water has a myriad of benefits: It takes less energy to heat, it takes less time since the noodles come to a boil with the water, and you end up with concentrated starchy cooking water that gives a silky, creamy finish to pasta sauces.
If you rinse your cooked noodles with cold water straight out of the boiling pot of water, it will completely halt the noodles from cooking more, which is important when you want to add them as the base mixed with other ingredients.
The olive oil is to stop the pasta from sticking together. He recommends adding the pasta and then turning it in the pot as soon as it starts to "melt". Cook the pasta and when you think it's done, test it by picking out a strand and tasting it.
And it's just downright wrong — at least, according to Italians. The truth is that olive oil and pasta are a match made in heaven, but only once the pasta is cooked. Adding the oil to the boiling water before you pour in the pasta or drizzling it on top as the pasta is boiling away does not do it any favors.