Can I mix different fruits in a jam even if there is not a recipe for that combination?

You can make a jam that is a mix of different fruits by referring to the basic recipes on the recipe sheet that comes with the pectin or to the instructions on the Get Creative page on this website, and then doing the math. You will use the amounts of lemon or lime juice (if called for), calcium water, and pectin appropriate for each cup of mashed fruit you will be jamming.

For example, if you want to make a combination Peach-Raspberry Jam using 3 cups of mashed peach and 1 cup of mashed raspberry, this is how you would figure out the additional ingredients for a safe recipe that will jell.

Lemon Juice: 1 Tablespoon is required for each cup of mashed peach (3 Tablespoons for 3 cups), while no lemon juice is required for the cup of mashed raspberry, for a total of 3 Tablespoons of lemon juice.

Calcium Water: 1 teaspoon is required for each cup of mashed peach (3 teaspoons for 3 cups), while ½ teaspoon is required for the cup of mashed raspberry, for a total of 3½ teaspoons of calcium water.

Pomona’s Pectin: ¾ teaspoon is required for each cup of mashed peach (2¼ teaspoons for 3 cups), while ½ teaspoon is required for the cup of mashed raspberry, for a total of 2¾ teaspoons of pectin.

The sugar and honey ranges always remain the same for 4 cups of mashed fruit: ½ cup up to 1 cup honey or ¾ cup up to 2 cups sugar.

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Posted in: 5. Questions About Ingredients: Fruit, Acid, Alcohol, Sweeteners, and Making Jam with No Sweetener

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