Adding oil to the water while cooking pasta serves several purposes, but it's important to note that opinions on this practice may differ among chefs and cooks. Here are the main reasons why some people add oil while cooking pasta:
Prevents sticking together: When pasta cooks, the starch on its surface can make the strands stick together. Adding oil to the boiling water creates a thin film on the pasta's surface, which helps reduce the chances of the strands sticking together. However, the oil doesn't completely prevent sticking, and proper stirring of the pasta during cooking is still essential.
Prevents boil-over: Adding oil can help prevent the water from boiling over the pot, especially if it's filled close to the brim. The oil reduces the surface tension of the water, minimizing the chances of an overflowing mess on the stovetop.
Starch dispersion: Some cooks believe that adding oil to the pasta water helps disperse the released starch, preventing it from forming a thick, starchy layer on the pasta's surface. This might result in a slightly smoother texture.
Prevents foaming: Oil can help reduce the foaming that occurs when cooking pasta, especially in a pot with a lot of surface area exposed to air.
However, there are differing opinions about adding oil to the pasta water. Some argue that the oil can coat the pasta, making it harder for sauces to adhere properly. Additionally, the oil may prevent the sauce from being absorbed effectively into the pasta, potentially affecting the overall flavor.
To prevent pasta from clogging up the drain after draining the water, it's crucial to remember these key steps:
Use enough water: Cook the pasta in a large pot with plenty of water. Using a smaller pot or insufficient water increases the chances of the pasta sticking together.
Add salt: Salt the water adequately before adding the pasta. This enhances the pasta's flavor and helps prevent it from sticking.
Stir during cooking: Stir the pasta gently and frequently during the cooking process to prevent sticking.
Cook to al dente: Be mindful of the cooking time and taste the pasta as it cooks. Drain the pasta when it's al dente (cooked but still slightly firm to the bite).
Reserve pasta water: Before draining the pasta, save a cup of the starchy pasta water. This water can be added to the sauce later to improve consistency and help the sauce adhere better to the pasta.
By following these tips, you can cook pasta without adding oil and still prevent sticking together or clogging up the drain after draining the water.