I use the water bath method for canning tomatoes. Just to make sure that the tomatoes are acidic enough, I always add a teaspoon of citric acid per quart. I like to sterilize my jars in the oven. After a through washing in dish soap and warm water, I preheat the oven to 300 degrees and heat the jars for about 30 minutes before filling.
I use the water bath method for canning tomatoes. Just to make sure that the tomatoes are acidic enough, I always add a teaspoon of citric acid per quart. I like to sterilize my jars in the oven. After a through washing in dish soap and warm water, I preheat the oven to 300 degrees and heat the jars for about 30 minutes before filling.