Chia Seed Jam Recipe

Chia seed jam is cooked berries thickened with chia seeds instead of pectin and a pile of sugar. Simmer 2 cups of raspberries or strawberries for 5 to 7 minutes, take the pan off the heat, stir in 2 tablespoons of chia seeds and 1 to 2 tablespoons of maple syrup or honey, and let it rest. In about 15 minutes you have roughly 1 cup of thick, spoonable jam.

The seeds do all the setting. They soak up the fruit juice and turn it into a soft gel, so there is no long boil and no wrinkle test on a cold plate. Lemon juice and vanilla are optional, but I add both to strawberries almost every time.

Chia Seed Jam Ratio and Timing

• Ratio: 2 tablespoons chia seeds to 2 cups berries, or 1 tablespoon per cup of fruit
• Sweetener: 1 to 2 tablespoons maple syrup or honey per batch, to taste
• Time: 5 minutes prep, 5 to 7 minutes cooking, 10 to 15 minutes resting
• Yield: about 1 cup of jam per batch
• Keeps: 1 week in the fridge, up to 2 months in the freezer
• Not for canning: it has too little sugar to sit in a pantry

Raspberry or Strawberry: Choosing the Fruit

Fresh or frozen berries both work. Raspberries collapse on their own in a few minutes and bring enough tartness to stand up to the maple syrup. Strawberries need chopping and a few presses with a fork or potato masher, and they cook into a softer, mellower jam. Whichever you pick, taste a berry first. Chia thickens fruit, it does not fix bland fruit.

Maple syrup gives a warm sweetness that sits behind the berries. Honey works the same way with a more floral note. A teaspoon of lemon juice wakes up strawberries, which can taste flat once cooked, and half a teaspoon of vanilla gives strawberry chia jam a rounder, bakery smell. Black and white chia seeds set the same; the only difference is the color of the specks.

How Chia Seeds Set Jam Without Pectin

Each chia seed has a coating that swells into gel when it meets liquid. Pectin needs a lot of sugar, acid and a hard boil to set. Chia needs none of that, which is why this jam can be lightly sweetened and still hold on a spoon. It also means the seeds can go in off the heat.

I like the seeds whole. They give a little pop and the speckled look of homemade jam. For a smoother spread, blend it briefly with an immersion blender or mini food processor once it has set. The same gel is what thickens a chia pudding overnight, only here the liquid is fruit juice instead of milk.

Cooking the Berries and Stirring In the Chia

Put the berries in a small saucepan over medium heat and stir now and then. After 5 to 7 minutes they burst and the juice turns syrupy. Mash strawberries as they soften; raspberries only need a spoon. Frozen berries carry extra water, so give them 2 to 3 minutes more until the juice looks thick rather than watery.

Take the pan off the heat. Stir in the maple syrup or honey, then sprinkle the chia seeds over the fruit while you stir. Tipped in as one pile, they clump into little gel balls with dry seeds in the middle. Add the vanilla and lemon juice if you are using them.

Leave the jam to rest for 10 to 15 minutes and stir it once or twice while it sits. Taste it at the end. A little more syrup fixes sharp raspberries, a few more drops of lemon fix flat strawberries.

How Thick Should Chia Jam Be After 15 Minutes?

It should mound softly on a spoon and no longer run like sauce. Drag a spoon through the pan and the trail should close slowly. That is the right point to stop. Chia jam firms up another step as it cools, and after a night in the fridge it is noticeably thicker, so wait before adding more seeds.

Chia Jam vs Traditional Jam

Traditional jam is fruit boiled with a lot of sugar, often close to the weight of the fruit, sometimes with added pectin. The sugar sets it and preserves it, which is why a sealed jar can sit in the pantry. Chia seed jam uses 1 to 2 tablespoons of syrup for 2 cups of berries and is ready in 15 minutes. The fruit tastes fresher and less sweet, and the texture is softer and seedier.

The trade off is shelf life. With so little sugar, chia jam is a fridge jam, not a canning jam. If you want jars for the pantry or for gifts, make a cooked homemade raspberry jam or strawberry jam instead. For another fresh tasting jam that lives in the freezer, there is strawberry freezer jam.

When Chia Jam Runs, Clumps or Turns Stiff

• Still runny after 15 minutes: chill it for an hour first. If it is still loose, stir in 1 more teaspoon of chia and wait 10 minutes. Old seeds gel slowly, so buy a fresh bag if this happens every batch.
• Lumps of gel: the seeds went in all at once. Stir hard for a minute or blend briefly.
• Too stiff or gluey: a heaped measure of chia or fruit cooked down too far. Loosen it with water or lemon juice, a teaspoon at a time.
• Too sour or too flat: add syrup to tart raspberries, lemon to mild strawberries, and taste again after it chills.

Other Fruit for Chia Jam

Keep the same ratio of 1 tablespoon of chia per cup of fruit and you can swap the berries. Blueberries make a deep, mellow jam and like a squeeze of lemon. Half raspberries and half blackberries gives a tart, seedy spread. A pinch of cinnamon or cardamom stirred into the simmering fruit suits autumn toast, and date syrup in place of maple gives a darker, caramel tone.

Keeping Chia Jam in the Fridge or Freezer

Spoon the jam into a clean jar or airtight container and refrigerate. It keeps for up to 1 week. To freeze, portion it into small jars or a silicone ice cube tray, then move the cubes to a freezer bag. Use it within 2 months and thaw it in the fridge overnight. Stir after thawing; the texture comes back almost unchanged.

Ways to Eat It

Spread it on buttered toast, spoon it over sour cream pancakes, or swirl it through a bowl of chia seed pudding with yogurt. It is thick enough to sit between the layers of a vanilla cake if you pipe a ring of buttercream around the edge first, and it makes a lighter filling for jam thumbprint cookies. For a citrus chia breakfast in the same style, try lemon cream chia pudding.

Chia Jam Questions From Readers

Is chia seed jelly the same as chia seed jam?

Mostly, yes. Chia does not make a clear, firm jelly, but for a smoother, more jelly-like spread, strain the cooked fruit before adding the chia, or blend the jam once it has set.

Can I make chia jam without sugar or syrup?

Yes. The sweetener only adds flavor; the chia does the setting. Ripe berries without syrup give a tart jam that still thickens the same way.

Can I use ground chia seeds?

You can. Ground chia sets the jam a little faster and leaves no visible seeds. Start with slightly less, about 1½ tablespoons per 2 cups of berries, because the powder absorbs liquid quickly.

If you make a batch with another fruit, tell me which one in the comments below. Someone else is probably staring at the same bag of frozen berries.