Step-by-step instructions
- Begin by slicing the bell peppers and onions thinly. A sharp knife or mandoline works wonders here for consistency.
- In a medium saucepan, combine the white vinegar, apple cider vinegar, sugar, mustard seeds, celery seeds, turmeric powder, salt, and black pepper.
- Heat over medium-high, stirring until the sugar dissolves and the mixture reaches a boil.
- Pour the hot vinegar mixture over the sliced peppers and onions in a large bowl. Make sure the veggies are fully submerged.
- Allow the relish to cool at room temperature. Once cooled, transfer it to airtight jars.
- Refrigerate for at least 24 hours, allowing the flavors to meld before serving.
Best ways to enjoy it
Pickled Pepper and Onion Relish shines when paired with grilled meats or sandwiches. Try layering it onto burgers, or serving it alongside tacos for a refreshing crunch. It can also be a delightful accent on a cheese board, adding a sweet and tangy contrast to rich cheeses. Toss some on a salad for an instant pop of flavor, or simply enjoy it straight from the jar as a snack!
Keeping leftovers fresh
To maintain the freshness of your Pickled Pepper and Onion Relish, store it in a sterilized jar in the refrigerator. Properly sealed, it should last about 1-2 months. Always use clean utensils when scooping out the relish to prevent contamination. For longer storage, consider freezing it, but be aware that the texture may change upon thawing.
Pro chef tips
- Slice Uniformly: Aim for similar thickness in your peppers and onions for even pickling.
- Taste Test: Adjust the sugar and salt according to your taste preferences — some may prefer it sweeter, others tangier.
- Add Herbs: For an extra layer of flavor, consider adding fresh herbs like dill or thyme.
Creative twists
Feel free to experiment with different flavor profiles! For a spicy kick, add a few sliced jalapeños or a dash of red pepper flakes. You could also switch up the mustard seeds for coriander seeds or the sugar for honey or maple syrup to create different flavor nuances.

FAQ
How long does it take to prepare this relish?
The total time includes about 30 minutes of prep and cooking, plus 24 hours for chilling and flavor melding in the fridge. It’s definitely worth the wait!
Can I substitute apple cider vinegar with another type?
Yes, you can use red wine vinegar or rice vinegar as alternatives. Each type brings its unique flavor, so choose based on what you enjoy most.
Is this recipe safe for canning?
While it can be refrigerated for an extended period, this version is best enjoyed fresh. If you’re considering canning, make sure to follow official canning guidelines for acidity and safety.
This tangy and sweet Pickled Pepper and Onion Relish is sure to become a pantry staple worth sharing at every gathering! Enjoy the burst of flavors and the compliments from your friends and family alike.
