As we all know, the struggle of keeping produce fresh can be very, very real. Quick expiration dates aside, even if your lettuce is still "good," is it really good? Enter Lama Bazzi of TasteGreatFoodie with this game-changing hack! Lama demonstrates how sealing lettuce in a jar full of water keeps it crisp and fresh for a whole month, then Dr. Heather Woolery-Lloyd explains the science behind the clever hack in a follow-up video. The short answer? Osmosis!