Your refrigerator temperature matters. If your fridge is running at 40°F (4°C) or above, the clock ticks faster. That means your sauce might only be good for 3 days instead of 7.
Most people don’t even know their fridge temperature. It’s like driving a car blindfolded and hoping you don’t hit a curb. Get a cheap fridge thermometer—it’s the life insurance for your leftovers.
The Bottom Line (That You’ll Probably Ignore)
Honestly? If you’re asking the question, you already know the answer. Your gut instinct is usually right. If you’re worried enough to Google “How long is spaghetti sauce good for,” it’s probably time to throw it out.
Go buy a new jar. It’s like $3. Is that worth a night of regret and abdominal fireworks? I don’t think so.
So next time you’re peering into that glass jar of red mystery, remember: the sauce is a guest in your fridge, not a permanent resident. Treat it with respect, label it with a date, and when in doubt, toss it out. Your taste buds and your toilet will thank you.