Easy Rhubarb Jam Recipe Without Pectin

This easy rhubarb jam recipe is made with three simple ingredients: fresh rhubarb, granulated sugar, and lemon juice. It cooks down into a bright, sweet-tart spread with a soft homemade set, and no added pectin is needed. If you enjoy simple fruit preserves, you may also like my Easy Rhubarb and Strawberry Jam Recipe Without Pectin or my Classic Homemade Strawberry Jam Without Pectin.

I like this recipe because the flavor of the rhubarb stays front and center. It is tangy enough to taste fresh but sweet enough to spread over toast, biscuits, or warm bread. For another easy small-batch jam, try my Easy Homemade Blueberry Jam Without Pectin.

What Is Rhubarb Jam?

Rhubarb jam is a sweet-tart fruit spread made by cooking chopped rhubarb stalks with sugar and lemon juice until the rhubarb breaks down and the mixture thickens. Rhubarb softens quickly as it cooks, so it makes a smooth, spoonable jam without needing to add pectin. This recipe produces a soft-set refrigerator or freezer jam that thickens further as it cools.

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Quick Look at This Recipe

Prep time: 10 minutes
Cook time: 25 to 35 minutes
Total time: About 1 hour, including resting
Servings: About 3 to 3 ½ cups
Texture: Thick, smooth, and softly set
Best served: On toast, biscuits, pancakes, yogurt, ice cream, or cookies

Why This Rhubarb Jam Recipe Works

Rhubarb contains plenty of moisture and naturally breaks down during cooking. Letting the chopped stalks sit with the sugar before cooking draws out that liquid, which helps the rhubarb cook evenly without adding water.

The lemon juice brightens the flavor and keeps the sugar from overwhelming the rhubarb. I cook the jam until the pieces have mostly disappeared and a spoon dragged through the pot briefly leaves a visible path. That visual cue is more dependable than relying only on a set number of minutes.

Ingredients

6 cups chopped fresh rhubarb
2 ½ cups granulated sugar
1 tablespoon fresh lemon juice

Use firm, fresh rhubarb stalks without soft or damaged areas. Both pink and green stalks work. The color of the finished jam will depend on the color of the rhubarb you use. My stalks had a lot of green on them but the color still came out red.

How to Make Rhubarb Jam

Step 1: Place the chopped rhubarb and granulated sugar in a wide Dutch oven or heavy-bottomed pot.

Step 2: Stir until the rhubarb is evenly coated. Let the mixture rest for about 30 minutes, or until the sugar begins drawing juice from the stalks.

Step 3: Stir in the fresh lemon juice. The rhubarb should already look glossy and slightly juicy from resting with the sugar.

Step 4: Set the pot over medium heat and cook, stirring regularly, until the sugar dissolves and the mixture begins to bubble. Reduce the heat to medium-low and continue cooking for 20 to 30 minutes. Stir more frequently as the jam thickens so the sugar does not stick or scorch on the bottom. The rhubarb will soften and break apart as it cooks. You can leave a little texture or mash it with a spoon or potato masher for a smoother jam.

Step 5: The jam is ready when it looks thick and glossy and a spoon drawn across the bottom of the pot leaves a path that takes a moment to fill back in. For another test, place a small spoonful on a cold plate. Let it sit for about a minute. It should look thick and spreadable rather than watery, but remember that it will continue to set as it cools.

Step 6: Remove the pot from the heat and carefully spoon the hot jam into clean jars. Let the jars cool to room temperature before covering and moving them to the refrigerator or freezer.

Tips for the Best Rhubarb Jam

Cut the rhubarb into evenly sized pieces so it cooks at the same rate.

Use a wide pot when possible. The larger surface area helps excess moisture evaporate and allows the jam to thicken more efficiently.

Keep the heat moderate. High heat can scorch the sugar or darken the jam before the rhubarb has fully softened.

Stir frequently near the end of cooking when the jam is thickest.

Do not judge the final texture while the jam is still hot. Rhubarb jam becomes noticeably thicker after it cools.

If you prefer a completely smooth jam, carefully use an immersion blender before filling the jars.

How to Store Homemade Rhubarb Jam

This recipe is written as a refrigerator or freezer jam.

Store cooled rhubarb jam in a clean, covered jar in the refrigerator for about 2 to 3 weeks.

For longer storage, transfer the cooled jam to freezer-safe jars or containers, leaving room at the top for expansion. Freeze for up to 6 months and thaw overnight in the refrigerator.

If you want shelf-stable jars, follow a tested water bath canning method from a trusted canning source.

How to Serve Rhubarb Jam

Rhubarb jam is delicious on warm toast, English muffins, biscuits, pancakes, waffles, and sourdough bread. I especially like the contrast of tart rhubarb jam with How To Make Easy Homemade Butter From Raw Milk on warm bread.

It can also be stirred into yogurt or oatmeal, spooned over vanilla ice cream, or used as a filling for thumbprint cookies.

For another homemade fruit spread, try my Homemade Raspberry Jam (Easy, No Pectin Needed!).

Frequently Asked Questions About Rhubarb Jam