Pickled Pepper Onion Relish

Featured in: Add Flavor to Every Dish

Bring extra zing to your table with this vibrant pickled pepper and onion relish. Crunchy bell peppers and onions soak up a tangy vinegary brine infused with mustard and celery seeds, turmeric, and a hint of heat. A perfect topping for sandwiches, grilled meats, or salads, this relish develops its best flavor after chilling for a day, allowing the sweet and sharp notes to mellow and blend. Easy to prepare and store, it adds color and a lively bite to any meal.

A woman is sitting at a table with a plate of food in front of her. The plate contains a dessert with berries on top.
By Sana Sana
Updated on Sat, 18 Oct 2025 19:48:22 GMT
A jar of pickled pepper and onion relish is displayed on a table. Pin it
A jar of pickled pepper and onion relish is displayed on a table. | recipebyme.com

Pickled pepper and onion relish is my secret weapon for instantly elevating any summer sandwich or charcuterie board. Whether topping grilled sausages or brightening a bowl of rice, this tangy sweet condiment has brought color and crunch to family backyard barbeques for years.

I first tossed this together on a whim for a burger night and everyone kept spooning more onto their plates. Now I cannot picture a gathering without a jar front and center.

Ingredients

  • Mixed bell peppers: Fresh colorful peppers add sweetness and crunch Choose firm peppers without wrinkles
  • Large onions: Sliced onions give the relish depth and mild bite I like using sweet yellow onions for the best balance
  • White vinegar: Provides classic sharp pickling flavor Look for one with 5 percent acidity
  • Apple cider vinegar: Adds a fruity mellow note Choose a bottle with no added sugar
  • Granulated sugar: Brings out the sweetness in the veggies Organic sugar gives a cleaner taste
  • Mustard seeds: Deliver subtle pops of flavor Golden seeds work best but brown are fine
  • Celery seeds: Layer in aromatic complexity Make sure seeds are fragrant and not stale
  • Turmeric powder: Gives brilliant color and earthy flavor Use fresh bright yellow turmeric powder
  • Salt: Seasons and draws out moisture Go for kosher or flaky sea salt
  • Ground black pepper: Balances with subtle heat Use freshly ground pepper for the most aroma
  • Red pepper flakes: Provide optional spicy kick Adjust to preference and use fresh flakes

Instructions

Prepare the Vegetables:
Slice the bell peppers and onions as thin as possible. This ensures every bite is packed with tang and crunch. Pile the sliced vegetables into a large heatproof bowl.
Mix the Pickling Brine:
In a saucepan, measure out the vinegars, sugar, mustard seeds, celery seeds, turmeric, salt, black pepper, and red pepper flakes if you like a spicy edge. Stir everything together so the sugar starts to dissolve. This blended brine is what infuses the vegetables with complex flavor.
Heat the Brine:
Set the saucepan over medium heat. Bring the mixture to a full simmer, stirring so nothing burns at the bottom. Wait until the sugar fully disappears into the vinegars and the spices begin to bloom. You might notice the brine changing from cloudy to clear.
Combine Vegetables with Brine:
As soon as the brine is ready, carefully pour it over the sliced vegetables in the bowl. Use a spoon or tongs to toss everything together so every slice is coated. Warming the vegetables helps them soak up the flavor.
Cool and Jar:
Let the relish hang out at room temperature until it stops steaming. Once cool, spoon the mixture and brine into clean jars or airtight containers. Press the veggies down to keep them submerged.
Refrigerate and Wait:
Place the relish in the fridge for at least a day. This patience pays off. The flavors meld together and the colors get even brighter. Now it is ready to lift all your meals.
A jar of pickled pepper and onion relish is displayed on a table.
A jar of pickled pepper and onion relish is displayed on a table. | recipebyme.com

Whenever I open a fresh jar the scent of mustard and celery seeds always brings me back to that first summer picnic where this relish completely stole the show. The way the turmeric stains every veggie golden still feels a little bit magical to me.

Storage Tips

Keep jars refrigerated and always use a clean spoon to serve. If liquid stops covering the veggies add a splash of vinegar to keep things safe and tangy. Relish keeps its crunch best when packed tightly in small jars so air stays out.

Ingredient Substitutions

Try banana peppers for extra sweetness or jalapeños if you want it bold and spicy. Substitute brown or red onions for a sharper flavor. Rice vinegar brings a gentle taste if you are out of apple cider vinegar.

Serving Suggestions

Pile onto hot dogs burgers or roasted chicken. Spoon over tacos or scrambled eggs for a tangy hit. Add a bright mound to any cheese plate for color and zip.

Cultural and Seasonal Notes

Quick pickled relishes like this are popular across southern US cookouts and European picnics. In late summer farmers market peppers make the most vibrant relish. This recipe works year-round just swap out pepper colors for the season.

Seasonal Adaptations

In spring use early green and yellow peppers for mellow flavor. During fall swap in red onions for a deeper sweetness. Winter batches benefit from a little extra turmeric for warmth.

Success Stories

My uncle brought this relish to a holiday potluck and it disappeared before dinner was even served. Even the pickiest kids at the table asked for extra on their plates. More than once I have handed out jars as food gifts and everyone asks for the recipe afterwards.

Freezer Meal Conversion

This relish is best enjoyed fresh from the fridge but you can freeze extra in freezer-safe containers. The texture may soften slightly but still brightens sauces or soups with a spoonful.

A jar of pickled pepper and onion relish is displayed on a table.
A jar of pickled pepper and onion relish is displayed on a table. | recipebyme.com

However you serve it, this vibrant relish is sure to spark appetite and conversation. It is an easy way to turn the ordinary into something memorable.

Recipe FAQs

→ How long should the relish chill before eating?

Refrigerate the relish for at least 24 hours to allow the flavors to meld and intensify before serving.

→ Can I use different types of peppers?

Yes, feel free to use any mix of bell peppers for color and flavor, or add a hot pepper for extra heat.

→ How should I store the finished relish?

Store the cooled relish in airtight containers or jars in the refrigerator for maximum freshness.

→ What foods pair well with this relish?

It’s delicious on burgers, sandwiches, hot dogs, grilled chicken, or as a tangy addition to cheese boards.

→ Is the relish suitable for canning?

This version is intended for refrigeration, but you may process jars using approved canning methods for longer storage.

Pickled Pepper Onion Relish

Vibrant pickled peppers and onions melded with spices create a tangy-sweet relish full of flavor.

Prep Time
20 min
Cook Time
10 min
Total Time
30 min
By Sana: Sana

Category: Sauces & Marinades

Skill Level: Easy

Cuisine: American

Yield: 16 Servings (Approximately 4 cups relish)

Dietary Categories: Vegan, Vegetarian, Gluten-Free, Dairy-Free

Ingredients

→ Vegetables

01 4 cups mixed bell peppers, thinly sliced
02 2 large onions, thinly sliced

→ Pickling Liquids

03 1 cup white vinegar
04 1 cup apple cider vinegar

→ Seasonings and Spices

05 1 cup granulated sugar
06 1 tablespoon mustard seeds
07 1 teaspoon celery seeds
08 1 teaspoon turmeric powder
09 1 teaspoon salt
10 1/2 teaspoon ground black pepper
11 1/2 teaspoon red pepper flakes

Steps

Step 01

Combine the sliced bell peppers and onions in a large mixing bowl to evenly disperse the vegetables.

Step 02

In a medium saucepan, add white vinegar, apple cider vinegar, granulated sugar, mustard seeds, celery seeds, turmeric powder, salt, ground black pepper, and red pepper flakes. Place over medium heat and bring to a boil, stirring until the sugar is fully dissolved.

Step 03

Carefully pour the hot pickling solution over the mixed bell peppers and onions. Stir thoroughly to ensure all vegetables are coated with the liquid.

Step 04

Allow the mixture to cool to room temperature. Transfer the relish to clean, airtight containers or glass jars, ensuring the vegetables are fully submerged in brine.

Step 05

Place the containers in the refrigerator and let the relish rest for a minimum of 24 hours to enable the flavors to meld before serving.

Notes

  1. For best flavor, allow the relish to develop for several days in the refrigerator. This condiment is excellent as a topping for sandwiches, grilled meats, or salads.

Required Equipment

  • Large mixing bowl
  • Medium saucepan
  • Wooden spoon
  • Measuring cups and spoons
  • Airtight containers or glass jars

Nutritional Info (per serving)

This data is provided as a guide and doesn't replace medical advice.
  • Calories: 40
  • Fats: ~
  • Carbohydrates: 10 g
  • Proteins: ~