Rhubarb relish – a vibrant explosion of sweet and tart flavors! This isn’t your grandma’s rhubarb pie filling; this is a versatile condiment that elevates any barbecue or adds a zing to your everyday meals. Its bright, tangy taste complements grilled meats beautifully, but it’s also fantastic spooned over roasted vegetables or even enjoyed alongside a simple cheese board. I first encountered this relish at a summer farmers’ market, and I’ve been hooked ever since – it’s become a staple in my kitchen!
Health Benefits of Rhubarb and Other Ingredients
Rhubarb, while often used in sweet dishes, is surprisingly rich in dietary fiber, which aids digestion. The red onion adds a punch of antioxidants and contributes to the relish’s vibrant color. Bell peppers are a great source of Vitamin C, boosting your immune system. The apple cider vinegar adds a pleasant tang and is known for its potential health benefits.
Pro Tip: For an even more intense flavor, use a combination of red and yellow bell peppers.
Ingredients for the Perfect Rhubarb Relish
- 4 cups diced rhubarb
- 1 large red onion, finely chopped
- 1 green bell pepper, finely chopped
- 1 red bell pepper, finely chopped
- 1 cup apple cider vinegar
- 1 ½ cups granulated sugar
- ½ cup brown sugar
- 1 tablespoon mustard seeds
- 1 teaspoon ground ginger
- ½ teaspoon ground cinnamon
- ½ teaspoon ground cloves
- ¼ teaspoon ground black pepper
- ¼ teaspoon salt
Instructions for Making Tangy Rhubarb Relish
1. Combining the Ingredients
In a large saucepan, combine the diced rhubarb, finely chopped red onion, green bell pepper, and red bell pepper. Add the apple cider vinegar, granulated sugar, brown sugar, mustard seeds, ginger, cinnamon, cloves, black pepper, and salt. Stir everything together until well combined. This is where the magic starts!
Personal Touch: I like to use a combination of granulated and brown sugar for a more complex sweetness. Feel free to adjust to your preference.
2. Bringing the Relish to a Boil
Place the saucepan over medium heat and bring the mixture to a rolling boil. Keep a close eye on it during this stage to prevent burning.
Cooking Tip: Use a heavy-bottomed saucepan for even heating and to prevent sticking.
3. Simmering to Perfection
Once boiling, reduce the heat to low and simmer the rhubarb relish uncovered, stirring occasionally. Continue simmering until the mixture has thickened and become syrupy, approximately 20-30 minutes. The consistency should be similar to a jam or chutney.
Cooking Tip: Don’t rush the simmering process. Lower heat is key to achieve the desired thickness and prevent burning.
4. Cooling and Jarring the Relish
Remove the saucepan from the heat and let the relish cool slightly. Once it’s manageable to handle, carefully spoon the relish into sterilized jars, leaving about ½ inch headspace at the top. Seal the jars tightly.
Important Note: Always use sterilized jars to prevent spoilage. You can sterilize jars by washing them in hot, soapy water, rinsing thoroughly, and then placing them in a boiling water bath for 10 minutes.
5. Refrigerating or Canning the Rhubarb Relish
Refrigerate the sealed jars for up to 3 weeks. For longer storage (up to a year), process the jars in a boiling water bath canner for 10 minutes. This ensures safe preservation for longer periods.
Storage Advice: Always check for proper sealing after processing the jars in a boiling water bath. A properly sealed jar will have a slight concave lid.
Serving Suggestions for Your Homemade Rhubarb Relish
This tangy rhubarb relish is incredibly versatile! Try it with:
- Grilled chicken, pork, or beef
- Roasted vegetables
- Cheese and crackers
- Sandwiches or wraps
- As a topping for yogurt or ice cream (a surprising but delicious combination!)
Frequently Asked Questions (FAQs)
Can I substitute the sugars?
Yes, you can experiment with different types of sugar. Coconut sugar or maple syrup could be used, but keep in mind that the flavor profile will change slightly. You might need to adjust the amount depending on the sweetness of your chosen substitute.
Can I make this relish without the spices?
You can certainly omit the spices if you prefer a simpler flavor, but the spices contribute significantly to the relish’s depth of flavor. Consider reducing the amount instead of omitting them entirely.
How long will the relish last in the refrigerator?
Refrigerated rhubarb relish will keep for approximately 3 weeks if stored properly in a sealed jar.
What if my relish is too thin after simmering?
If your relish is too thin, continue to simmer it uncovered for a longer period, stirring frequently. You can also try adding a tablespoon or two of cornstarch mixed with a little cold water to thicken it further.

Rhubarb Relish
Ingredients
Method
- Combine all ingredients in a large saucepan and stir well.
- Bring the mixture to a boil over medium heat.
- Reduce heat and simmer uncovered, stirring occasionally, until thickened and syrupy.
- Remove from heat and let cool slightly.
- Spoon into sterilized jars, seal, and refrigerate for up to 3 weeks.
- For longer storage, process jars in a boiling water bath for 10 minutes.