Strawberry Rhubarb Raspberry Berry Jam

The first time I made this jam, my kitchen smelled like a berry patch in full bloom. I had stumbled upon rhubarb at the farmers market and couldn't resist adding whatever berries I had on hand. That spontaneous experiment turned into something my family now requests every spring.

Last summer, I made a triple batch for my sister's wedding favors. Guests were still talking about it months later, and I now understand why homemade jam feels like giving someone a jar of sunshine.

Ingredients

• Strawberries: Use ripe, red berries for the best sweetness and color
• Rhubarb: Fresh or frozen works beautifully, adding that signature tang
• Raspberries: These bring an intense berry flavor and beautiful color
• Mixed berries: Blueberries or blackberries add depth and complexity
• Granulated sugar: Essential for proper setting and preserving
• Lemon juice: Balances sweetness and helps with pectin activation
• Fruit pectin powder: Ensures your jam sets perfectly every time

Instructions

Prepare your berries:

Combine all fruits in a large non-reactive pot and mash gently to release their natural juices

Add the setting agents:

Stir in lemon juice and pectin, then let the mixture rest for 5 minutes to hydrate the pectin

Bring to a boil:

Place the pot over medium-high heat, stirring frequently until the mixture reaches a rolling boil

Add sugar and boil hard:

Pour in all the sugar at once, stir until dissolved, then boil vigorously for 1-2 minutes

Skim and jar:

Remove any foam from the surface, then ladle hot jam into sterilized jars leaving 1/4 inch headspace

Process or store:

Process in a boiling water bath for 10 minutes for shelf-stable jars, or refrigerate immediately

Save

My daughter now helps me mash the berries every June. It has become our unofficial start to summer, and the taste of this jam brings back that kitchen ritual all year long.

Getting the Perfect Set

I learned that undercooking is better than overcooking when it comes to jam. The mixture will continue to set as it cools, so do not worry if it seems slightly loose when you jar it.

Customizing Your Berry Blend

Some of my best batches came from using whatever was about to go bad in the fridge. Do not be afraid to adjust the ratios or swap berries based on what you have available.

Storage and Serving Ideas

Properly sealed jars will keep in a cool, dark place for up to a year. Once opened, this jam becomes part of my morning routine.

• Try swirling into plain Greek yogurt for breakfast
• Spoon over vanilla ice cream for an instant dessert
• Mix with cream cheese for a quick bagel spread

Save

There is something deeply satisfying about lining up those ruby-red jars on the shelf, each one containing a little bit of summer preserved for later.

Recipe FAQs

→ How long does this jam stay fresh?

When properly canned and processed in a water bath, sealed jars will stay fresh for up to one year in a cool, dark pantry. Once opened, refrigerate and use within three weeks for the best flavor and texture.

→ Can I use frozen fruit instead of fresh?

Absolutely. Frozen strawberries, raspberries, and mixed berries work perfectly in this jam. Thaw the fruit first and drain any excess liquid. Rhubarb can also be used frozen—just slice it while still slightly frozen for easier handling.

→ What makes rhubarb special in this jam?

Rhubarb adds a wonderful tangy brightness that balances the sweetness of strawberries and raspberries. Its natural acidity creates that perfect sweet-tart profile and helps the jam set beautifully without becoming overly cloying.

→ Can I reduce the amount of sugar?

Sugar plays a crucial role in preserving and setting jam, so reducing it significantly may affect texture and shelf life. For a lower-sugar version, use a specialized low-sugar pectin designed for reduced sugar preserves, following the package instructions.

→ What's the purpose of lemon juice in this recipe?

Lemon juice serves two important purposes: its natural acidity helps the pectin activate properly for a better set, and it brightens the overall flavor profile, enhancing the natural fruit flavors and adding a subtle complexity.

→ How can I tell when the jam is ready to jar?

The jam is ready when it reaches a full rolling boil that doesn't stop bubbling when stirred. After boiling for 1-2 minutes, you can also test by placing a small amount on a cold spoon—if it wrinkles slightly when pushed with your finger, it's set.