Fermented urine to save dinner? Yep, they really did that. When salt was hard to find and freezing waters offered no mercy, early Scandinavian sailors got creative. Really creative. The salty truth? To keep fish from spoiling on long, icy voyages, they used... fermented urine. Here’s why it worked: ✅ Urine, once aged, becomes rich in ammonia ✅ Ammonia kills bacteria and slows decay ✅ It kept their catch fresh without salt Sounds wild, right? But for sailors battling Arctic winters, it was survival. No salt. No refrigeration. Just determination—and a very unusual preservative. 🥶 Brutal weather. Limited supplies. 💡 One of history’s most unexpected hacks. 🤯 And yes, it actually worked. Sometimes, staying alive means doing what no one else dares. Even if it stinks.