Harry and David Pepper and Onion Relish Recipe: Sweet and Tangy Versatile Topping

This pepper and onion relish transforms ordinary dishes into something extraordinary with its perfect balance of sweet and tangy flavors. It took me years to refine this version, which captures the essence of classic condiments with a homemade touch.

The secret lies in slowly caramelizing the onions and peppers before adding the vinegar and sugar. This process develops deep, complex flavors that make the relish incredibly versatile. It works as a topping, sandwich spread, or even a glaze for meats.

What you get is a thick, glossy relish with visible vegetable pieces suspended in a rich, flavorful syrup. The combination of spices adds warmth without overpowering the natural sweetness of the peppers and onions.

Store it in airtight jars in the refrigerator for up to three weeks, or process for longer shelf life. This recipe makes enough to share and enjoy for weeks.

Ingredients for Harry and David Pepper and Onion Relish Recipe Ideas

Nine simple ingredients create this sweet and tangy condiment with deep flavor.

The peppers and onions are the foundation—use bright, firm produce for best results. I grab mine from Whole Foods or the local farmers market when they’re at peak ripeness. The vinegar matters too: apple cider vinegar gives that perfect tang, but white vinegar works in a pinch (just tastes sharper). Don’t skip the caramelization step—it builds those complex flavors the intro promised.

No mustard seeds? Ground mustard at half the amount works, though you’ll lose some texture. Celery salt can sub for the seeds (use one-third the amount), but add a pinch of ground celery seed too. The brown sugar can be swapped for coconut sugar, but the flavor profile changes slightly. For extra warmth, a pinch of cayenne complements without overpowering.

This keeps in the fridge for 3-4 weeks in airtight jars. For longer storage, process using proper canning methods—lasts up to 1 year unopened. The flavors actually improve after a day or two as everything melds together.

Step-by-Step Instructions for Pepper and Onion Relish

This simple method transforms fresh vegetables into a sweet-tangy relish that keeps for weeks.

Step 1: Prep the Vegetables for Even Cooking

Start by dicing the 3 whole Red Bell Peppers into small, uniform pieces—this ensures they soften at the same rate. I like to remove all seeds and white membranes for a cleaner texture in the finished relish.

Thinly slice the 2 whole Yellow Onions into half-moons. The thin slices will caramelize beautifully as they cook, adding depth to the flavor. Place both vegetables in a large bowl while you prepare the remaining ingredients.

Step 2: Combine All Ingredients in the Pot

In a large, heavy-bottomed pot, combine the diced peppers, sliced onions, 1 cup Apple Cider Vinegar, 0.75 cup Granulated Sugar, and 0.5 cup Brown Sugar. The vinegar provides the tangy backbone, while the sugars balance it with sweetness.

Add the 1 tsp Mustard Seeds, 0.5 tsp Celery Seeds, 0.25 tsp Ground Turmeric, and 1 tsp Salt. Stir everything together until the sugars begin to dissolve. The turmeric adds a subtle earthiness and that signature golden color.

Step 3: Simmer Until Thickened and Glossy

Bring the mixture to a boil over medium-high heat, stirring occasionally. Once boiling, reduce the heat to medium-low and let it simmer gently for 45-50 minutes, stirring every 10 minutes to prevent sticking.

You’ll know it’s ready when the liquid reduces by about half and the relish takes on a glossy, jam-like consistency. The peppers and onions should be tender but still have a slight bite. If it thickens too much before the vegetables are done, add a splash of water and continue cooking.

Step 4: Cool and Transfer to Jars

Remove the pot from heat and let the relish cool to room temperature, about 1-2 hours. As it cools, it will thicken slightly more. This is completely normal and part of the process.

Once cooled, transfer the relish to clean, airtight jars or containers. It will keep in the refrigerator for up to 3 weeks, allowing the flavors to meld and deepen over time. For the best taste, I recommend waiting at least 24 hours before using it to let the flavors fully develop.

Flavor Customization for This Recipe

Sweet Heat Twist

For a subtle kick, I add ½ tsp crushed red pepper flakes or 1 finely minced jalapeño with the seeds removed. This brings warmth that complements the sweetness without overwhelming the balance. The heat builds gradually, so the first bite is always a pleasant surprise. 🌶️

Smoky Depth

Incorporate ½ tsp smoked paprika or ¼ tsp chipotle powder for a barbecue-inspired version. This works particularly well when using the relish on burgers or grilled meats. I’ve found that toasting the spices in the pot for 30 seconds before adding liquids enhances their aroma.

Herbal Freshness

Stir in 1 tbsp fresh chopped parsley or 1 tsp dried thyme at the end of cooking for a brighter, more aromatic profile. This variation pairs beautifully with roasted chicken or as a cheese board accompaniment. The herbs add a layer of complexity that elevates the relish.

Fruity Brightness

Add ½ cup diced fresh pineapple or ¼ cup raisins during the last 10 minutes of simmering for a sweet-tart dimension. This version is fantastic with pork dishes or as a glaze for ham. The fruit softens just enough to blend seamlessly into the texture.

Umami Boost

For a savory depth, mix in 1 tbsp Worcestershire sauce or 1 tsp soy sauce as the relish cools. This adds a rich, almost meaty quality that makes it ideal for sandwiches or as a topping for hot dogs. I love how this small addition transforms the flavor profile. 💫

Citrus Zing

Finish with 1 tbsp lemon or orange zest for a bright, citrusy note. This works especially well if you’re serving the relish with seafood or lighter dishes. The zest should be added after cooking to preserve its fresh, vibrant flavor.

Frequently Asked Questions