To store spaghetti in the refrigerator and prevent it from sticking together, follow these simple steps:
Cook the spaghetti: Start by boiling the spaghetti in a large pot of salted water until it reaches your desired level of doneness. Be sure not to overcook it, as softer spaghetti is more likely to clump together.
Drain and rinse: Once the spaghetti is cooked, drain it in a colander and rinse it under cold water. Rinsing helps remove excess starch, which can contribute to sticking.
Add oil (optional): While some people add a little oil (such as olive oil) to the cooked and drained spaghetti to prevent sticking, it's not necessary. The oil can make the surface of the pasta slippery, but it also tends to make sauces less likely to cling to the pasta when you reheat it later.
Portion and cool: Divide the spaghetti into individual portions or use the amount you need for a single serving. Allow the spaghetti to cool to room temperature before refrigerating. It's essential to avoid putting hot spaghetti directly into the fridge, as this can create condensation and lead to clumping.
Storage container: Place the cooled spaghetti in an airtight container or a resealable plastic bag. Squeeze out as much air as possible before sealing it shut. A container with a lid is preferable to prevent the pasta from absorbing any odors from the fridge.
Refrigerate promptly: Once the spaghetti is in the container, place it in the refrigerator promptly. Try to keep it away from strong-smelling foods to avoid picking up any unwanted flavors.
By following these steps, your spaghetti should remain separate and not stick together while stored in the refrigerator. When you're ready to eat it, you can reheat the pasta by gently warming it in the microwave or by placing it in boiling water for a short time. If you wish to add sauce, you can do so after reheating the spaghetti.