Hello, I'm an expert in home canning and food preservation. When it comes to using mason jars, it's important to ensure they're clean before you start. Here's what you need to know:


1. Rinse: Start by giving the jars a quick rinse under warm water to remove any dust or debris.

2. Soak: If the jars have been used before, it's a good idea to soak them in warm, soapy water for a few minutes to loosen any residue.

3. Scrub: Use a bottle brush to scrub the inside of the jar, paying special attention to the threads at the top where food can sometimes get trapped.

4. Rinse Again: After scrubbing, rinse the jars thoroughly under warm water to ensure all soap is removed.

5. Sterilize: For canning, you'll want to sterilize the jars to kill any bacteria that could spoil your food. This can be done by boiling them in a large pot of water for 10 minutes, or by using a dishwasher on the hottest setting.

Remember, cleanliness is key when it comes to food safety, so taking the time to properly clean and sterilize your mason jars will help ensure your preserved foods stay safe and delicious.

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New canning jars out of the box are not sterile. ... Clean jars should then be kept warm prior to filling. You can leave them in the closed dishwasher after the cycle, or use your canner as it is preheating, or create a separate water bath that will keep the jars both clean and warm.read more >>