Perpetual Stew: Safe or Scary?

Before refrigeration, humans kept food safe by keeping the fire going under it. A perpetual stew — a pot kept at a continuous simmer for days or weeks — was the default cooking method across human history. In this episode, we break down the microbiology, the practical protocol, and the psychological hurdle of trusting heat the way we trust cold. The USDA confirms: food held above 140°F is safe indefinitely from bacterial growth. So why does a simmering pot feel so wrong?