Strawberry Rhubarb Raspberry Jam

The first time I made this jam, I had picked strawberries at a local farm and my neighbor dropped off a bundle of fresh rhubarb. Something about that combination of bright red and pink stalks just felt right together. Now I make a triple batch every June because my family literally puts it on everything.

Last summer my daughter helped me mash the berries and she got so into it that she accidentally splashed bright red juice up the cabinet walls. We were both laughing so hard, and honestly, that sticky mess was worth it for the memory. Now whenever we open a jar, we talk about that afternoon.

Ingredients

• 2 cups strawberries: Use ripe ones because they break down better and release more natural juices for that classic jam consistency
• 1½ cups rhubarb: Fresh gives the best texture but frozen works perfectly fine if thawed first
• 1 cup raspberries: These add such a gorgeous deep pink color and intense berry flavor
• 1 cup mixed berries: I usually do half blueberries and half blackberries for that nice color contrast
• 2½ cups granulated sugar: Do not reduce this amount or your jam might not set properly
• 2 tbsp lemon juice: Fresh squeezed makes such a difference in brightening all those flavors
• 1 package fruit pectin: This ensures your jam actually sets instead of being runny syrup

Instructions

Mash those berries:

Combine all your fruit in a big pot and give it a light mash with a potato masher. You want some chunks remaining for texture but enough juice released to help everything dissolve.

Let it rest:

Stir in the lemon juice and pectin until everything is well combined. Let this sit for about 5 minutes so the pectin can start working its magic.

Get things bubbling:

Set your pot over medium high heat and bring it to a boil while stirring pretty constantly. You do not want anything sticking to the bottom and burning.

Add the sugar:

Dump all the sugar in at once and stir until it completely dissolves. Bring it back to that rolling boil and keep it there for exactly 1 to 2 minutes.

Skim and jar:

Take it off the heat and skim off any foam that formed on top. Ladle the hot jam into your sterilized jars leaving just a little bit of space at the top.

Seal it up:

Wipe the rims clean, put the lids on tight, and process in a boiling water bath for 10 minutes. Let the jars cool completely before storing.

Save

I started making this jam as wedding favors for my best friend, and now three years later people still ask me when I am making my next batch. There is something about homemade jam that feels like such a personal gift.

Getting That Perfect Set

One thing I learned after a couple batches of runny jam is that altitude actually matters. If you live above 3000 feet you might need to boil it a bit longer to reach the setting point. I always keep a spoon in the freezer and test a dollop on it after that 1 minute boil.

Mixing Up Your Berries

Sometimes I will swap in marionberries or tayberries if I find them at the farmers market. The beauty of this recipe is that it is more of a template than a strict formula. Just keep the total fruit amount the same and experiment with what looks fresh.

Serving Ideas Beyond Toast

This jam became a pantry staple because we use it in so many unexpected ways. Swirl it into plain Greek yogurt or oatmeal. Use it as a glaze for roasted chicken or pork. My personal favorite is warming up a spoonful and drizzling it over vanilla ice cream.

• Try adding a teaspoon of vanilla extract right before canning for a bakery style flavor
• A pinch of cinnamon or cardamom takes this in such a cozy direction
• Label your jars with the date because this tastes even better after sitting for a month

Save

There is something so satisfying about seeing those jars lined up on the shelf. Homemade jam captures summer in a way that nothing else quite can.

Recipe FAQs

→ How long does this jam keep once opened?

Once opened, refrigerate the jam and use within three weeks for optimal freshness and flavor.

→ Can I use frozen berries instead of fresh?

Yes, frozen berries work perfectly in this preserve. Thaw rhubarb and mixed berries before combining, and adjust cooking time slightly as frozen fruit may release more liquid.

→ What's the purpose of lemon juice in jam making?

Lemon juice serves two purposes: it balances the sweetness with natural acidity and helps the pectin activate properly for better setting. Freshly squeezed lemon juice provides the best results.

→ Do I need to process jars in a water bath?

Water bath processing is only necessary for long-term shelf storage. For immediate consumption or refrigeration within three weeks, simply ladle into clean, sterilized jars and seal tightly.

→ How can I tell when the jam has reached setting point?

The jam reaches setting point when it forms a full rolling boil that cannot be stirred down. After boiling hard for 1-2 minutes, remove from heat and test by placing a small amount on a chilled plate - it should wrinkle when pushed with a finger.

→ Can I reduce the sugar amount?

Sugar plays a crucial role in preservation and setting. Reducing sugar significantly may affect the jam's consistency and shelf life. For lower sugar options, use specifically designed low-sugar pectin and follow package instructions.