Low-sugar strawberry jam made with Pomona’s Pectin lets you control sweetness without compromising the set. The jam is bright, fruity, and easily customized—use plain sugar, honey, maple syrup, or reduce sweetener to let the fresh berry flavor shine. Because Pomona’s pectin is calcium-activated rather than sugar-dependent, you get a reliable set without long boils or excess sugar masking the fruit.
Strawberry jam is a summer staple in my kitchen. Traditional jam recipes often rely on large amounts of sugar for both preservation and thickening, which can drown out the berry’s natural flavor. When you reduce sugar in those recipes, the texture is often compromised—either too runny or overly thick. Pomona’s Pectin solves that by using calcium water to activate gel formation, so the jam sets well even with very little or no added sweetener.
Why Use Pomona’s Pectin?
Pomona’s Pectin offers flexibility: you can use as much or as little sweetener as you like and still achieve a dependable set. That makes it simple to match the sweetness to your berries or to use alternative sweeteners like honey, maple syrup, or agave. Because it doesn’t require high-sugar boiling, the pectin preserves the bright color and fresh taste of strawberries.
How Pomona’s Differs from Other Pectin
Most commercial pectins require a high sugar-to-fruit ratio to gel properly. Pomona’s is different: it uses calcium water to activate the pectin, so sugar amount does not determine the set. The box includes two packets—one with pectin powder and one with calcium powder to make the calcium water. Follow the package instructions for the calcium water, but the overall process is straightforward and fast.
Ingredients for Pomona’s Low Sugar Strawberry Jam
This recipe yields about four to five half-pint jars, depending on how much sweetener you use:
- 4 cups mashed strawberries (about 8 cups whole berries)
- 2 tsp calcium water (made from the calcium packet in the Pomona’s box)
- ¼ to 1 cup sugar, honey, maple syrup, or other sweetener (adjust to taste)
- 2 tsp Pomona’s Pectin powder
Optional: 1–2 tablespoons lemon juice for extra brightness (not required for safety with already acidic fruits like strawberries).
How to Make Low Sugar Strawberry Jam with Pomona’s
Prepare jars, lids, and rings. Set up a boiling water bath canner and keep the jars hot while you make the jam.
Wash, hull, and mash strawberries until you have 4 cups of fruit. Aim for a chunky mash rather than a smooth purée—use a fork or potato masher.
In a small bowl, mix the pectin powder into your chosen sweetener until dissolved. If using honey, warm it slightly to blend more easily; sugar or maple syrup can be mixed cold.
Place the mashed strawberries and 2 tsp prepared calcium water in a large saucepan. Bring to a full rolling boil over medium-high heat.
Stir in the pectin-sweetener mixture, return to a full boil, and cook 1–2 minutes, stirring constantly.
Remove from heat and ladle the hot jam into prepared jars, leaving 1/4 inch headspace. Wipe rims, apply lids and rings, and tighten to fingertip tight.
Process jars in a boiling water bath for 10 minutes (15 minutes if above 6,000 feet elevation). Let jars rest in the canner for 5 minutes after processing, then transfer to a towel-lined counter to cool.
Allow jars to cool undisturbed for 12–24 hours. Check seals, label, and store sealed jars in a cool, dark place for up to 18 months. Refrigerate jars that did not seal and use within a few weeks.
Low Sugar Pectin Comparison
If you don’t have Pomona’s, other “low sugar” pectins (Sure-Jell, Ball, Mrs. Wages) still depend on some sugar for gel formation and follow a more conventional jam process. Pomona’s is the best choice when you want to go very low on sugar or use alternative sweeteners, and it contains only pectin and calcium—no extra ingredients. Expect a slightly different texture: a bit more tender and less gelatinous, but with excellent, fresh fruit flavor.
Low Sugar Strawberry Jam (with Pomona’s Pectin)
Equipment
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Water Bath Canner
Ingredients
- 4 cups mashed strawberries, from about 8 cups whole berries
- 2 tsp calcium water, from Pomona’s packet
- ¼ to 1 cup sugar, honey, or maple syrup (adjust to taste)
- 2 tsp Pomona’s Pectin powder
Instructions
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Prepare the Equipment: Wash jars, lids, and rings. Set up a boiling water bath canner and keep jars hot until ready to fill.
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Prep the Fruit: Rinse, hull, and mash strawberries until you have 4 cups. Add them to a saucepan with 2 tsp prepared calcium water.
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Mix Pectin and Sweetener: In a small bowl, thoroughly mix pectin powder into your chosen sweetener (sugar, honey, or maple syrup).
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Cook the Jam: Bring the fruit mixture to a full boil. Stir in the pectin-sweetener mix. Return to a full boil and cook 1–2 minutes, stirring constantly.
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Fill the Jars: Immediately ladle hot jam into prepared jars, leaving ¼ inch headspace. Wipe rims, apply lids, and tighten bands fingertip tight.
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Process in Water Bath: Process in a boiling water bath for 10 minutes (15 minutes above 6,000 ft). Let jars rest 5 minutes before removing.
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Cool and Store: Cool jars undisturbed for 12–24 hours. Check seals, label, and store in a cool, dark place for up to 18 months.
Notes
Calcium water is essential: It activates the pectin so the jam sets without sugar and does not alter the flavor. One Pomona’s box contains enough calcium to make multiple batches.
Yields vary: Less sweetener typically yields slightly less finished volume. Expect about four half-pint jars with 1/2 to 1 cup of sweetener.
Nutrition
Nutrition information is automatically calculated and should be used as an approximation.
Strawberry Canning Recipes
If you have extra berries, try other preserving methods: old-fashioned strawberry jam without pectin for a looser set, seedless strawberry jelly for a smooth spread, or strawberry syrup for pancakes and drinks. For baking and desserts, tested strawberry pie filling and strawberry-rhubarb jam are seasonal favorites.
