Sugar-Free Pickle Relish Recipe: Crunchy, Tangy, and Naturally Sweetened

This sugar-free pickle relish recipe transforms classic tangy crunch into a guilt-free condiment that still delivers bold flavor without artificial sweeteners. The secret lies in balancing vinegar, spices, and natural sweetness from stevia or erythritol—no refined sugar required.

I developed this version after realizing how easy it is to adapt traditional relish while keeping that signature crunch and zing.

What sets this recipe apart is its precision: 1 cup of diced cucumbers (peeled and seeded) pairs perfectly with ½ cup apple cider vinegar and a carefully measured blend of mustard seeds, celery salt, and black peppercorns.

The fermentation process—just 24 hours in the refrigerator—preserves texture while deepening flavor without added sugar. Every batch turns out bright, crisp, and tangy.

By the end, you’ll have a relish that’s crunchy, tangy, and naturally sweetened—ideal for sandwiches, hot dogs, or charcuterie boards without the sugar crash. The recipe scales easily, so you can make a big batch for the year.

Storage is simple: keep it refrigerated in an airtight jar for up to 3 months, with flavors intensifying over time.

This version proves sugar-free doesn’t mean flavor-free. The natural sweetness from stevia or erythritol complements the vinegar’s sharpness, while the spices add warmth. Perfect for those watching sugar intake but craving that classic relish taste. Let’s make it—step by step.

Ingredients for sugar free pickle relish

Ten precise ingredients transform simple vegetables into vibrant, sugar-free relish with restaurant-quality tang.

The cucumbers are non-negotiable for texture. Kirby cucumbers from a specialty produce section—like Whole Foods or local farmers markets—deliver the perfect balance of crunch and seedlessness. Avoid pre-sliced cucumbers; their texture degrades quickly. For the vinegar, raw, unfiltered apple cider vinegar adds complexity, while standard vinegar flattens the flavor. Erythritol, sourced from Lakanto or Wholesome Sweeteners, ensures sweetness without glycemic impact. The mustard seeds should be toasted lightly in a dry pan for 30 seconds to enhance their nutty aroma—trust me, it makes a difference.

No erythritol? Stevia in the ratio of 1:1 works, though it has a slightly bitter aftertaste. Substituting vinegar? White wine vinegar or rice vinegar both function, but apple cider’s fruity notes are irreplaceable. Fresh dill is ideal, but dried dill at one-third the amount suffices in a pinch. For a smokier profile, add ½ tsp smoked paprika. The celery salt is critical—Diamond Crystal contains real celery powder, while generic brands often omit it. If unavailable, blend 1 tsp celery seeds with 1 tsp kosher salt as a substitute.

This relish thrives on fermentation time. Store in an airtight glass jar in the refrigerator for 24 hours before tasting—flavors develop gradually. It peaks at 3 months of refrigerated storage, with the texture remaining crisp and the tang intensifying. For gifting, portion into small jars; the relish keeps for 6 months when frozen. Always use clean utensils when handling to prevent contamination, and avoid metal spoons that can react with the vinegar over time.

Step-by-step instructions for sugar-free pickle relish

This method delivers a bright, crunchy relish with natural sweetness and perfect texture every time.

Wash the 2 lb fresh Kirby cucumbers thoroughly under cool water to remove any dirt or wax residue. Using a sharp vegetable peeler, remove the skin in long, even strips—this preserves the crisp texture we want in the finished relish. Cut the cucumbers in half lengthwise and scoop out the seeds using a spoon, being careful not to break the flesh.

Next, dice the cucumber flesh into ¼-inch cubes for uniform texture. I use a sharp chef's knife and cut the cubes consistently—this ensures even cooking and a professional presentation. Transfer the diced cucumbers to a large mixing bowl and set aside. The key here is speed; cucumbers begin to release water immediately after cutting, so work efficiently to prevent excess moisture.

In a small bowl, whisk together the 0.25 cup granulated erythritol, 1.5 tsp celery salt, 1 tsp coarsely ground black peppercorns, 1 tsp dried dill weed, and 0.5 tsp kosher salt. This dry blend forms the flavor foundation of our sugar-free relish. The erythritol provides sweetness without the sugar crash, while the celery salt adds that signature tangy depth.

Sprinkle this mixture evenly over the diced cucumbers in the mixing bowl. Use your hands to gently toss the cucumbers until every piece is lightly coated. This ensures balanced flavor in every bite. Avoid pressing too hard—we want to maintain the cucumbers' natural crunch rather than bruising them.

Add the 0.5 cup apple cider vinegar, 1 tbsp yellow mustard seeds, 2 tbsp chopped fresh dill weed, and 1 tbsp freshly squeezed lemon juice to the cucumber mixture. The vinegar will begin to break down the cucumber texture slightly, creating that signature relish consistency. The mustard seeds add a subtle crunch and earthy note, while the fresh dill brings bright, herbal freshness.

Stir everything together thoroughly with a wooden spoon, making sure the liquid is evenly distributed. The mixture should look vibrant green with visible specks of mustard seeds. Let it sit at room temperature for 10 minutes—this allows the flavors to begin melding and the cucumbers to soften slightly, which is crucial for achieving the perfect texture.

Transfer the relish to a clean, airtight glass jar or container. Seal it tightly and refrigerate for at least 4 hours, but ideally overnight. This resting period allows the flavors to fully develop and the cucumbers to absorb the seasoning. The acidity from the vinegar and lemon juice will continue to work, creating that signature tangy brightness we associate with great pickle relish.

After resting, give the relish one final taste and adjust seasoning if needed. The erythritol should provide natural sweetness without any sugar aftertaste, while the celery salt and black peppercorns should be noticeable but not overpowering. The texture should be firm yet tender, with a slight crunch from the cucumbers and mustard seeds. Serve chilled as a condiment or side dish with your favorite proteins.

Essential equipment for sugar free pickle relish

Precision Cutting Tools

Start with a sharp chef’s knife—I recommend the Wüsthof Classic 8-inch for clean, even cuts. A mandoline slicer (like the OXO Good Grips) is ideal for achieving those perfect ¼-inch cucumber cubes without bruising.

For peeling, a Y-peeler from Mercer Culinary removes cucumber skins in long strips, preserving texture. Never use a dull knife—it crushes the cucumbers and releases excess moisture, ruining the relish’s crunch. 🥒

Fermentation Containers

Use airtight glass jars—I prefer Le Parfait 16-ounce jars—to contain the fermentation process while allowing flavors to develop. Avoid plastic containers, as vinegar can degrade them over time. For larger batches, mason jars (like Ball or Kerr) work perfectly.

Always leave ½ inch of headspace to prevent spills during refrigeration. Sterilize jars by boiling them for 10 minutes before use to prevent bacterial contamination.

Measuring Tools

Precision matters with this recipe, so invest in a stainless steel measuring set—I use OXO Good Grips—for accurate measurements of 0.25 cup erythritol and 1.5 tsp celery salt.

A spice grinder (like the Spice & Tea Mini Mill) ensures your black peppercorns are coarsely ground for optimal flavor. For vinegar and lemon juice, a liquid measuring cup with clear markings guarantees consistency. Never eyeball measurements—this relish relies on balance.

Optional: Mustard Seed Toaster

For an extra layer of flavor, lightly toast your yellow mustard seeds in a dry nonstick skillet over medium heat for 30 seconds—just until fragrant. This step enhances their nutty aroma and adds subtle crunch.