Water bath canning is a method of preserving food in glass jars by processing them in boiling water. It is a simple and effective way to extend the shelf life of fruits, vegetables, jams, and pickles. The key to successful water bath canning is to follow proper processing times to ensure that harmful bacteria are killed and the food is safely preserved.
It is important to consult a water bath canning processing time chart to determine how long each type of food should be processed. Processing times vary depending on the type of food, jar size, and altitude. Here are some general guidelines for processing times:
Fruits: Most fruits require 15-20 minutes of processing time.
Jams and Jellies: Typically need 5-10 minutes of processing time.
Pickles: Pickled vegetables usually need 10-15 minutes of processing time.
Tomatoes: Tomato products like salsa or sauce can require 35-45 minutes of processing time.
Altitude Adjustment
Altitude plays a role in water bath canning processing times because water boils at different temperatures at different elevations. As altitude increases, water boils at a lower temperature, so processing times need to be adjusted accordingly. Here are some general guidelines for altitude adjustments:
0-1,000 feet: No adjustment needed.
1,001-3,000 feet: Add 5 minutes to processing time.
3,001-6,000 feet: Add 10 minutes to processing time.
Above 6,000 feet: Add 15 minutes to processing time.
By following a water bath canning processing time chart and making altitude adjustments when necessary, you can safely preserve your favorite foods for long-term storage. Happy canning!