Yes, if you follow the rules. Oven sterilization at 275°F for 20 minutes kills 99.9% of bacteria. That’s clean enough for a surgery room or your grandma’s famous peach preserves. But here’s the fine print: not all experts agree. Some snooty food safety folks insist on boiling because “it’s tested.” I say testing is for cowards; we have science and a timer.
But if you’re paranoid—and let’s be honest, we’re all a little paranoid about botulism—you can combo-method: oven-sterilize the jars, then boil the lids. That way, you cover all your bases. It’s like wearing a belt and suspenders. You look ridiculous, but your jam is safe.
Final Pro-Tips (Because I Love You, Reader)
Don’t forget to cool the jars slowly after sterilization. Remove them with oven mitts (never bare hands—ouch) and let them rest on a towel. Rapid cooling can crack the glass, and nobody wants a jar divorce in the middle of a recipe.
Also, only sterilize as many jars as you’ll use in one session. Old-school canners might tell you to “save them for later,” but that’s a myth. Once cool, the jars can re-contaminate unless sealed immediately. Sterilize and fill like a boss.
So go forth, brave pickler. Your oven is ready. Your jars are ready. And now you’re armed with the knowledge that dry heat is a silent, beautiful assassin of germs. Just remember: no plastic, no cold jars, and definitely no peeking. Your jam will thank you.
