Most people think canning safety is just about following a recipe. But there’s a lot happening behind the scenes that makes that recipe safe in the first place. 🫙 Jar size matters because heat moves differently through larger jars. That’s why you can’t just use any size you want. 🍋 Acidity is what decides whether boiling water is enough to kill harmful bacteria or if you need the higher heat of a pressure canner. 🥣 Thickness matters because thicker foods heat more slowly. That’s why purees, d