Use a mix of whatever berries you have on hand to make this easy, fast, and delicious jam! You can use raspberries, strawberries, blackberries, or blueberries in a mix to make this mixed berry jam.
The beauty of this recipe is the naturally occurring acid that’s present in berries. This acid makes berries foolproof for beginners and makes it nearly impossible for you to make a mistake.
You can download the Acid & Canning Chart for free below and it lists the pH values of all the things you might preserve in jars so you can see exactly how acid the fruit in your berry basket might be.