To ensure optimal preservation of homemade jams, marmalades, tomato purees, vegetables, and other delights, knowing how to sterilize jars is essential. Autumn is the ideal time for preparing preserves, and our pantries fill up quickly. However, to safeguard these culinary treasures, sterilizing containers is a crucial step. By following four simple methods, it’s possible to avoid mold, bacteria, and fungi, which can not only alter the quality of preserves but also pose a health risk.
Why is Sterilizing Jars So Important?
Sterilizing jars before filling them ensures that your preserves remain authentic and can be stored safely.
Four Easy Methods to Sterilize Jars:
- Classic Method: Sterilizing Jars Using a Pot
- Line a tall-sided pot with a clean cloth
- Place jars (without lids) upright in the pot
- Add water to cover the jars and boil for 30-40 minutes
- Add lids after 20 minutes
- Cool and drain on a clean cloth
- Dishwasher Method
- Place jars and lids upside down in the dishwasher
- Run a cycle at the highest temperature
- Fill hot jars immediately after the cycle ends
- Microwave Method (for glass jars only, not lids)
- Fill clean jars with a small amount of water
- Microwave for about two minutes until water boils
- Drain and dry upside down on a clean cloth
- Oven Method
- Preheat oven to 212°F (100°C)
- Place jars in the oven for 5 minutes
- Turn off the oven and let jars cool inside
Additional Tip:
After filling jars with hot preserves, close them tightly with sterilized lids and turn them upside down to cool. This creates a vacuum seal for better preservation.