The Safety Issues around Canning Tomatoes and Tomato Products
I stopped in at CTV Morning Live to chat about how to can tomatoes safely. This article provides a little more info on why canning tomatoes is a little more tricky than other fruits.
Tomatoes are Borderline between High Acid and Low Acid
A tomato’s acid level changes as it grows and may differ from one year to another due to growing conditions. In other words, there’s really no way for us home canners to know what the acid level of our tomatoes is at the time of processing. But that’s okay, we can accommodate for this uncertainty by adding lemon juice, vinegar or citric acid (a powdered product you can get at the pharmacy) to our tomatoes. By doing so, we know for certain that the pH will be where it needs to be.