Once opened, pasta sauce generally lasts in the refrigerator for about 5 to 7 days, depending on the type of sauce. Tomato-based sauces typically remain good for 5 to 7 days, while cream-based sauces should be consumed within 3 to 5 days. Oil-based sauces, such as pesto, can last a bit longer, up to 7 to 10 days due to the preservative nature of the oil

. Homemade tomato sauces tend to have a shorter fridge life, usually around 3 to 5 days, since they lack preservatives found in store-bought varieties

. Proper storage is key to maximizing shelf life: use an airtight container, refrigerate promptly after opening, and label with the date to keep track

. If you want to keep pasta sauce longer, freezing is a good option. Frozen pasta sauce can last up to 3 to 4 months when stored in a freezer-safe container, and can be thawed in the fridge before reheating

. In summary:

• Tomato-based sauces: 5–7 days in fridge
• Cream-based sauces: 3–5 days in fridge
• Oil-based sauces (pesto): 7–10 days in fridge
• Homemade tomato sauce: 3–5 days in fridge
• Frozen sauce: 3–4 months in freezer

Always check for signs of spoilage such as off smell, mold, or changes in texture before consuming leftover sauce.