As an expert in the field of food preservation, I can tell you that the process of sterilizing lids for canning is crucial to ensure the safety and longevity of the preserved food. The sterilization process involves heating the lids to a specific temperature to kill any potential bacteria or microorganisms that could spoil the food.

For metal lids, the sterilization process typically involves placing them in a pot of boiling water for about 10 minutes. This is enough time to kill most bacteria and ensure that the lid is sterile when you place it on the jar.

For plastic lids, the process is a bit different. You should place the lids in a pot with simmering water, which is just below the boiling point, for about 5 minutes. This lower temperature is used to prevent the plastic from warping or melting.

It's important to note that the sterilization time can vary depending on the specific type of lid and the manufacturer's instructions. Always follow the guidelines provided with your canning equipment for the best results.

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To pre-sterilize jars, place the cleaned jars right-side-up on a rack in a canner and fill the jars and canner with water to 1-inch above the tops of the jars. Bring the water to a boil and then boil for 10 minutes at altitudes less than 1,000 feet elevation.read more >>