Old spaghetti works. Just watch the water.

No, there’s no real expiration date for dried spaghetti. You can safely eat a box you found behind the canned tomatoes from 2018.

Dried pasta is basically just semolina flour and water, dehydrated to the point where nothing grows on it. Keep it in a dry, cool place and it’s essentially shelf-stable forever. The “best by” date is mostly about texture and taste, not safety.

That said, age does change the cooking behavior slightly. Older spaghetti tends to be more brittle — you’ll get more broken strands when you drop it in the pot. It can also cook a little unevenly because the starch structure changes over years. Nothing dramatic, but it might go from al dente to mush faster. I’d start checking for doneness a minute early.

Flavor-wise, there’s a subtle difference. Fresh dried pasta (a few months old) has a cleaner wheat taste. After a year or two, it gets slightly stale — not bad, just less vibrant. If you’re eating it with a heavy sauce, you won’t notice. If it’s just butter and cheese, you might.

Bottom line: don’t throw it away. Just boil it and see. Worst case, you overcook it by thirty seconds.