The Jam I Couldn’t Stop Eating

I made this maple rhubarb jam on a day when I was trying to clear out a bag of rhubarb that had been sitting in my freezer longer than I wanted to admit. I didn’t expect much because frozen rhubarb usually feels a bit dull once cooked.

But the smell that came off the pot with maple and cardamom changed my mind fast.

It ended up being one of those jars I kept opening “just to taste” until it was half gone.

Why This Recipe Works

Here’s the thing—rhubarb on its own is sharp, almost aggressively tangy. Maple syrup smooths that out without making it taste like candy, and cardamom adds a warm background note that makes it feel deeper than a basic jam.

What I figured out is that pectin is what keeps this from turning into syrup. Without it, you just get a runny compote. With it, you get a spreadable jam that actually holds on toast.

Ingredient Notes

I use pure maple syrup, not pancake syrup. The flavor difference is huge and you really notice it here.

Fresh or frozen rhubarb both work. Frozen releases more liquid, so you may need a slightly longer simmer to get the right thickness.

Cardamom is strong, so don’t overdo it. Half a teaspoon is enough to notice it without overpowering the rhubarb.

How to Make It

Start by combining the rhubarb, lemon juice, and maple syrup in a pot. As it heats, the rhubarb will break down and release a lot of liquid. It looks like too much at first, but that’s normal.

Once it starts bubbling, stir in the pectin mixed with a bit of sugar or liquid so it doesn’t clump. Keep stirring as it thickens.

The mixture will go from watery to slightly glossy and jam-like as it cooks. You’ll notice it coating the spoon instead of running straight off.

Add the cardamom and a small pinch of salt near the end so the flavor stays fresh instead of fading during cooking.

Once it reaches a thicker consistency, remove it from heat and pour into clean jars while still hot.

Things I Learned the Hard Way

• Don’t skip pectin unless you want syrup instead of jam
• Frozen rhubarb needs extra simmer time
• Cardamom gets stronger as it sits
• Sterilizing jars actually matters for shelf life
• It thickens more after cooling

Storage & Serving Suggestions

Store in the fridge for up to 2–3 weeks or process in sterilized jars for longer storage. I usually use it on toast, but it also works surprisingly well swirled into yogurt or spooned over pancakes.

Lyna Recipes

The Jam I Couldn’t Stop Eating

A small batch rhubarb jam sweetened with maple syrup and flavored with warm cardamom for a unique homemade spread.

Print Recipe Pin Recipe

Prep Time 10 minutes mins

Cook Time 25 minutes mins

Total Time 35 minutes mins

Servings: 1.5 cups

Ingredients Method Notes

Ingredients

  

• 2 cups rhubarb fresh or frozen
• 1/2 cup pure maple syrup
• 2 tbsp lemon juice freshly squeezed
• 1/2 tsp ground cardamom
• 1 tbsp powdered pectin
• Pinch salt

Method

 

1. Combine rhubarb, maple syrup, and lemon juice in a saucepan over medium heat.
2. Cook until rhubarb breaks down and mixture becomes juicy and bubbling.
3. Stir in pectin and continue cooking while stirring constantly.
4. Simmer until mixture thickens and coats the back of a spoon.
5. Add cardamom and salt, stirring well to combine.
6. Remove from heat and pour into sterilized jars while hot.
7. Let cool completely before sealing or refrigerating.

Notes

Jam will continue to thicken as it cools. Frozen rhubarb may release extra liquid, so allow additional simmer time if needed. Store in the fridge for short-term use or preserve in sterilized jars for longer storage.