
These mason jar cold noodles are a fresh, make-ahead lunch packed with chewy noodles, crisp vegetables, and your choice of savory sauce. Layer everything in jars for an easy grab-and-go meal that stays flavorful and satisfying all week.
Bring a pot of water to a boil and cook the thin spaghetti according to the package directions until just tender. Drain, rinse briefly under cold water to cool, then toss with the neutral oil so the noodles do not stick together.
While the noodles cook, prepare your protein of choice and season it lightly with salt. Let it cool slightly before assembling the jars.
Make one sauce for the jars. For a sesame version, whisk together the light soy sauce, sesame oil, rice vinegar, sugar, minced garlic, hot water, and sesame paste until smooth. For a peanut-lime version, whisk together the peanut butter, soy sauce, lime juice, fish sauce, ginger, and enough hot water to loosen the sauce.
Divide the sauce between mason jars, then layer in the noodles, cooked protein, and vegetables and herbs. Seal and refrigerate until ready to eat.
When serving, shake the jar well to coat everything in the sauce. If needed, loosen with a small splash of water and toss before eating.
Use sturdy vegetables such as carrots, cucumbers, cabbage, or bell peppers for the best texture. Keep delicate herbs near the top so they stay fresh. These noodles keep well in the refrigerator for up to 3 days; if the sauce thickens, stir in a little cold water before serving.