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The original was posted on /r/lifeprotips by /u/chem_bro on 2025-05-24 17:16:37+00:00.

I thought this was normal, but the looks on my coworkers faces told me otherwise. Works on a stale slice of bread, a rock hard bagel, ultra crusty French bread, etc. For the really dry ones, a few flecks of water and 10 seconds is all it needs to bring it back. Even if your intention isn’t to use the bread for eating but for further processing (French toast), microwave it to get it back to baseline fresh, then process it.

Outside of mold, this pretty much removes the freshness time limit that bread has. The only application this doesn’t really work for is if you need stale bread to make something specific like Thanksgiving stuffing.