A shelf-stable sweet pickle relish is chopped cucumber, onion, and bell pepper simmered in a sweet-tart vinegar brine, then processed in a boiling-water canner. The standard home-canning version uses pickling salt to pull water out of the vegetables, cider or white vinegar at 5% acidity, sugar, celery seed, and mustard seed. Packed hot into half-pint jars and processed 10 minutes at low altitude, it keeps in a cool, dark pantry for about a year and tastes like the hot-dog relish most people expect—sweeter and milder than dill relish.
The salt soak and a thorough drain matter as much as the brine. Skip them and the jars fill with watery liquid and soft bits. Change the vinegar strength or cut the acid “to taste” and the batch is no longer a tested pickle product.
What This Relish Is—and What It Is Not
Sweet relish is a quick-process pickle, not a fermented one. Vegetables sit in salt for a few hours, then cook briefly in vinegar and sugar. Safety comes from three things working together: enough 5% vinegar, a hot pack, and a full water-bath process. Sugar flavors the relish and helps texture; it is not a substitute for vinegar.
This recipe follows the long-published Ball Blue Book sweet pickle relish formula: a small batch, about 8 half-pint (8-ounce) jars. It is the version most searchers want when they type “sweet relish recipe canning.” A separate USDA pickle relish exists if you want a larger, less-sweet batch; that recipe is covered later so the two are not mixed.
Ingredients for Classic Canned Sweet Relish
Makes about 8 half-pint jars.
- 1 quart finely chopped cucumbers (about 4 medium pickling cucumbers)
- 2 cups finely chopped onion (about 2 medium)
- 1 cup finely chopped green bell pepper (about 1 large)
- 1 cup finely chopped red bell pepper (about 1 large)
- ¼ cup canning or pickling salt
- Cold water, to cover the salted vegetables
- 3½ cups granulated sugar
- 2 cups cider vinegar or white distilled vinegar, labeled 5% acidity
- 1 tablespoon celery seed
- 1 tablespoon mustard seed
- Optional: calcium chloride “pickle crisp,” ⅛ teaspoon per pint or per package directions
Chop the vegetables to a small, even dice—about ⅛ to ¼ inch. A food processor works if you pulse in short bursts and stop before the mix turns to slurry. Measure the chopped vegetables after chopping, not before.
Equipment That Actually Matters
- Boiling-water canner or atmospheric steam canner
- 8 half-pint canning jars, new lids, and rings
- Large non-reactive pot (stainless steel or enameled; not aluminum, copper, or cast iron)
- Colander and a clean kitchen towel or salad spinner
- Jar funnel, ladle, bubble remover, jar lifter
- White vinegar or a damp paper towel for wiping rims
Hard water and reactive metal pots can darken pickles. Use canning salt, not iodized table salt, so the brine stays clearer.
Step-by-Step Sweet Relish Canning Method
1. Prep the cucumbers so they stay firm
Wash cucumbers and peppers under cold running water. Cut 1/16 inch off the blossom end of each cucumber and discard that tip. Enzymes in the blossom end soften pickles during storage. Leave the peel on. Pickling varieties (Kirby and similar short, bumpy cucumbers) hold texture better than long slicing or “burpless” cucumbers, which release more water and finish softer.
Use cucumbers as soon as you can after harvest. Produce that sits a day or more at room temperature is more likely to go hollow or soft.
2. Salt, soak, and drain until the vegetables are almost dry
Combine the chopped cucumbers, onions, and peppers in a large bowl. Sprinkle with the ¼ cup pickling salt and cover with cold water. Let stand 2 hours at room temperature.
Drain in a colander. Rinse under cold water to remove excess salt. Drain again, then press, spin, or wrap the vegetables in a clean towel until they are no longer dripping. Hidden water is the usual reason homemade relish looks thin in the jar.
3. Heat the brine, then simmer the vegetables briefly
While the vegetables drain, wash jars and keep them hot. Heat the canner so the water will be ready when the relish is packed.
In the large pot, combine sugar, vinegar, celery seed, and mustard seed. Bring to a boil, stirring until the sugar dissolves. Add the drained vegetables. Return to a simmer and cook 10 minutes, stirring now and then.
Ten minutes is the useful window: long enough for the vegetables to heat through and take on brine, short enough that they do not collapse. A rolling boil for much longer is a common path to mushy relish.
4. Pack hot, leave headspace, and process
Ladle the hot relish into hot half-pint jars, leaving ½ inch headspace (some Ball printings use ¼ inch; ½ inch is the safer modern default used by tested-recipe publishers). If you use pickle crisp, add it now. Slide a bubble tool around the inside of each jar, recheck headspace, wipe the rims, and apply lids fingertip-tight.
Process in a boiling-water canner with water covering the jars by at least 1 to 2 inches. Start timing only when the water returns to a full rolling boil.
Processing time for this Ball-style sweet pickle relish (half-pint jars):
| Altitude | Process time |
|---|---|
| 0–1,000 ft | 10 minutes |
| 1,001–3,000 ft | 15 minutes |
| 3,001–6,000 ft | 20 minutes |
| Above 6,000 ft | 25 minutes |
Times above 1,000 feet follow the usual water-bath increase used by home-canning publishers for this recipe. After the time is up, turn off the heat, wait 5 minutes, then lift the jars out. Cool upright and undisturbed for 12 to 24 hours. Remove rings, check that lids are concave and do not flex, wash the jars, label, and store.
Do not retighten rings after processing. A jar that fails to seal goes in the refrigerator and should be used within a few weeks.
Why You Should Not “Improve” the Acid Balance
Relish is acidic enough for water-bath canning only when the tested vinegar amount and strength stay in place. Use vinegar labeled 5% acidity. Do not use homemade vinegar, “salad vinegar” at 4%, or a splash of lemon juice as a swap for measured vinegar. Do not cut the vinegar to make the relish less sharp. If you want less sweetness, a better path is to choose the USDA pickle relish below, which uses more vinegar and far less sugar, rather than editing this formula by guesswork.
Sugar can be reduced in some refrigerator relishes. For canned relish, treat sugar cuts as untested unless you are following a published reduced-sugar recipe from a lab-tested source.
Ingredient Choices That Change the Jar
Cucumbers vs. zucchini. Fresh zucchini can stand in for cucumber in this style of relish in many extension-backed kitchen practices, cup for cup, if the zucchini is firm and not oversized. Frozen shredded zucchini is a poor swap; it weeps and turns the relish soft. Dedicated zucchini-relish recipes exist if that is the vegetable you have in bulk.
Cider vinegar vs. white vinegar. Both are safe at 5%. Cider vinegar gives a rounder, slightly fruity brine. White vinegar stays paler and sharper. The color of cider vinegar will tint the relish gold.
Peppers. Red pepper is for color. All green works if that is what you have. Hot peppers can replace part of the sweet pepper for a spicy relish, but keep the total chopped-pepper volume the same so the vegetable-to-brine ratio does not drift.
Salt. Use canning or pickling salt. Kosher salt can work if you weigh it or use a brand-specific volume conversion; iodized table salt can cloud the brine and add off flavors. Salt substitutes that contain potassium chloride often taste bitter in pickles.
Pickle crisp. Optional. Calcium chloride helps some batches stay a bit firmer, especially if the cucumbers were not peak-firm. It does not fix overcooked vegetables or slicing cucumbers.
What You Can Safely Change—and What You Cannot
Safe to adjust:
- Chop size (finer or a little coarser)
- The mix of red and green pepper
- Cider vinegar or white vinegar, both at 5%
- Whole celery seed and mustard seed amounts for taste, within reason
- Half-pint vs. several smaller 4-ounce jars processed for the same time as half-pints
Do not change for shelf-stable canning:
- Reducing vinegar
- Using vinegar under 5% acidity
- Skipping the water-bath process and “inverting jars to seal”
- Pressure-canning this relish as a shortcut (high heat tends to smash the texture)
- Adding low-acid extras (oil, extra onion beyond the recipe, untested thickeners) without a tested formula
- Packing into quart jars on this recipe
Cornstarch appears in some old family relish recipes. It is not part of this tested sweet-relish formula and can interfere with heat penetration. If you want a thicker finished relish, drain more thoroughly before cooking and let sealed jars sit several weeks; pectin in the vegetables and evaporation of free liquid during the simmer do more than a last-minute thickener.
How Long to Wait, How to Store, How to Use It
Flavor is better after the jars rest. Plan on 3 to 4 weeks in the pantry before you open the first one. Store sealed jars in a cool, dark place. A year is a realistic quality window; after that the relish is often still safe if the seal is sound, but color and crunch fade.
After opening, refrigerate and use within about a month. Watch for mold, off smells, spurting liquid, or a lid that has unsealed in storage—those jars get thrown out, not tasted.
Uses that make a small-batch project worth the afternoon:
- Hot dogs, sausages, and burgers
- Tuna, egg, or potato salad
- Deviled eggs
- A spoonful in meatloaf or burger mix
- Mixed with mayonnaise for a quick sandwich spread
- On fish tacos or pulled pork when you want sweet-tang instead of slaw
If the Relish Turns Out Wrong
Watery jars. The vegetables were not drained hard enough after the salt soak, or slicing cucumbers dumped extra liquid into the pot. Next batch: rinse, then wait 10 to 15 minutes in the colander and press again.
Mushy relish. Usual causes are slicing cucumbers, old cucumbers, leaving the blossom end on, simmering well past 10 minutes, or pressure canning. Ice in the soak (used in some relish recipes) and pickle crisp help only if the produce started firm.
Too sweet. This formula is meant to be sweet. You cannot safely “fix” sealed jars by pouring vinegar into them and resealing without a tested reprocess method. Use extra-sweet relish in dishes that have fat or acid (potato salad, hot dogs with mustard). For the next canning day, use the USDA pickle relish, which calls for 2 cups sugar against 6 cups vinegar.
Cloudy liquid. Often harmless: table salt, hard water, or ground spices. Cloudiness plus a bad smell, slime, or a broken seal is spoilage—discard.
Dark relish. Iodized salt, hard water, ground spices left in the jar, or a reactive pot. Use whole seeds, pickling salt, and stainless steel.
Jars that unseal weeks later. Check storage temperature, lid quality, and headspace. Vinegar can corrode the underside of cheap lids over long storage; use canning lids made for home use and keep rings off during storage so you can spot a failed seal.
Soft or slippery pickles with signs of spoilage. Do not eat. Weak vinegar, skipped processing, and dirty produce are the usual safety failures.
USDA Pickle Relish, If You Want a Bigger, Less-Sweet Batch
The National Center for Home Food Preservation publishes a different Pickle Relish: more cucumber and pepper, a long ice-water salt soak, a 24-hour rest in spiced vinegar, only 2 cups sugar, and 6 cups of 5% white vinegar. Yield is about 9 pints. Process hot-packed half-pints or pints 10 minutes at 0–1,000 feet, 15 minutes at 1,001–6,000 feet, and 20 minutes above 6,000 feet.
That recipe tastes more like a pickled chopped salad than ballpark sweet relish. It is the better official option when you have a crate of cucumbers and do not want 3½ cups of sugar in a small pot. Do not blend the two formulas. Keep the soak times, spice bag, vinegar amount, and process time that belong to the recipe you chose.
NCHFP also publishes a Sweet Pepper Relish (no cucumber) if peppers are what you have: ground peppers and onion boiled 30 minutes with vinegar, sugar, salt, and mustard seed, then processed 10 minutes at low altitude in pints or half-pints.
Frequently Asked Questions
Can I can this in pint jars? The Ball sweet pickle relish is written and yield-tested as about 8 half-pints. Many home canners pack the same mixture in pints, but half-pints match the published yield and heat more evenly. If you need pints from a lab-tested relish formula, use the USDA pickle relish, which lists both half-pints and pints.
Can I skip canning and keep it in the fridge? Yes. Cool the cooked relish, pack it in clean jars, and refrigerate. Use within a few weeks. Freezing works in freezer containers with headspace; thawed relish is softer and better mixed into cooked or bound salads than eaten as a topping.
Do I have to sterilize jars first? For products processed 10 minutes or more, washed hot jars are the usual method. Keep them hot so the glass does not crack when you add boiling relish. Always use new lids.
Why is my yield short? Chop size, how hard you drain, and how much liquid you ladle off all change jar count. A very dry pack fills fewer jars. That is a quality issue, not a safety problem, as long as headspace is correct and the process time is not shortened.
Is it safe if the vegetables float and the brine looks thin? Floating solids are common. Safety depends on the tested acid, a full process, and a sealed lid—not on how pretty the pack looks. Thin brine after opening usually means the salt soak needed more draining.
Can I add dill, turmeric, or extra onion? A pinch of turmeric will yellow the relish; that is a color choice, not a safety change. Extra onion increases low-acid vegetable mass. Stay close to the measured cups. For a clearly different flavor, use a tested dill relish or pepper relish instead of loading this pot with extras.
Homemade canned sweet relish is a short project with a long payoff if the vinegar stays at 5%, the vegetables are drained dry, and the jars get a full water-bath process for your altitude. Follow one tested formula from start to finish. The first jar you open after a few weeks on the shelf is the one that tells you whether to make a double batch next cucumber season.