Zucchini Relish

Prep Time 30 minutes
Chilling / Salting Time 2 hours (or overnight)
Cook Time 20 minutes
Canning Time 10 minutes
Total Time ~3 hours (includes resting time)
Recipe Intensity / Difficulty Level Easy to Medium (Beginner-friendly canning)
Yield 6 pint jars (approx. 48 servings)

Why You’ll Love This Recipe

  • Zero Waste Solution: Perfect for using up oversized summer zucchini that are too large for frying or roasting.

  • Balanced Flavor Profile: A delicious harmony of sweet sugar, sharp cider vinegar, mustard seed, and aromatic spices.

  • Superior Texture: Salting and draining the shredded zucchini extracts excess moisture, keeping the final relish crunchier than standard store-bought pickle relish.

  • Versatile Storage: Choose between a quick refrigerator relish (no canning required) or water bath canning for long-term pantry storage up to 1 year.

Ingredients Breakdown

Fresh Produce

  • 10 cups shredded or finely diced zucchini (about 4–5 large zucchinis)

  • 4 cups finely chopped yellow onions (about 2 large onions)

  • 2 cups finely chopped red bell pepper (about 2 medium peppers)

  • 1 cup finely chopped green bell pepper (about 1 medium pepper)

  • ¼ cup pickling salt or non-iodized sea salt (essential for pulling out liquid)

The Pickling Liquid & Spices

  • 2 ¼ cups Apple Cider Vinegar (5% acidity for safe canning)

  • 3 cups granulated white sugar (adjust slightly to taste, but sugar aids preservation)

  • 1 tablespoon mustard seeds

  • 1 tablespoon celery seeds

  • ½ teaspoon ground turmeric (for that signature bright golden hue)

  • ½ teaspoon ground nutmeg

  • ½ teaspoon black pepper

1.Prep & Salt the Vegetables:Essential for texture and removing excess water.

  1. Wash the zucchini thoroughly. Trim the ends (peeling is optional; leaving the skin on adds vibrant green color).

  2. Shred the zucchini using a food processor fitted with a shredding disc, or finely chop it by hand.

  3. In a large non-reactive mixing bowl, combine the shredded zucchini, chopped onions, red bell pepper, and green bell pepper.

  4. Sprinkle the ¼ cup of pickling salt evenly over the vegetables and toss thoroughly.

  5. Cover the bowl with a clean towel and let it sit at room temperature for 2 hours (or in the refrigerator overnight). The salt draws out water from the zucchini cells to guarantee crispness.

2.Rinse and Drain Thoroughly:Removes excess salt and prevents soggy relish.

  1. Transfer the salted vegetable mixture into a colander set in the sink.

  2. Rinse the vegetables thoroughly under cold running water for 1–2 minutes to wash away the excess salt.

  3. Use your hands, a clean flour-sack kitchen towel, or cheesecloth to squeeze out as much moisture as humanly possible. Squeezing thoroughly is the secret to a thick, rich relish.

3.Simmer the Brine and Relish:Cook time: 20 minutes on medium heat.

  1. In a large stainless steel or enamel-coated stockpot, combine the apple cider vinegar, sugar, mustard seeds, celery seeds, turmeric, nutmeg, and black pepper.

  2. Bring the vinegar and spice mixture to a boil over medium-high heat, stirring until the sugar completely dissolves.

  3. Add the well-drained vegetable mixture to the pot and stir to combine.

  4. Bring the entire mixture back to a gentle boil. Reduce heat to medium-low and simmer uncovered for 15 to 20 minutes, stirring occasionally until the vegetables are tender and have absorbed the golden brine.

4.Fill the Jars:Follow standard home-canning sanitization steps.

  1. If canning, pre-sterilize 6 pint-sized Mason jars and keep them warm.

  2. Ladle the hot relish into the warm jars using a canning funnel, leaving ½-inch of headspace at the top.

  3. Run a non-metallic spatula or bubble-remover tool down the inside of each jar to release trapped air bubbles.

  4. Wipe the jar rims with a damp cloth to remove any sticky liquid. Center a clean lid on each jar and screw the band down until fingertip tight.

5.Water Bath Canning Process:10 minutes boiling water bath.

  1. Place the filled jars onto the rack inside a water bath canner filled with hot water (water should cover the jars by at least 1–2 inches).

  2. Cover the pot and bring to a rolling boil over high intensity heat.

  3. Process pint jars for 10 minutes (adjust time for higher altitudes: +5 min for 1,001–3,000 ft; +10 min for 3,001–6,000 ft).

  4. Turn off heat, remove the canner lid, and let jars sit for 5 minutes before removing them with jar tongs.

  5. Place jars on a towel-lined countertop and allow them to cool undisturbed for 12–24 hours. You should hear the satisfying pop of the vacuum seals!

 

Pro-Tips for Success

  • Do Not Skip the Salting Step: Zucchini is over 94% water. Squeezing out the moisture prevents the relish from becoming watery when stored.

  • Uniform Chop Size: Using a food processor with a coarse shredding disc or pulse function speeds up prep while maintaining consistent texture.

  • Acidity Safety: Always use commercially bottled vinegar with a guaranteed 5% acidity to ensure safe home canning.

Storage & Shelf Life

  • Water Bath Canned: Stored in a cool, dark pantry for up to 12 months. Once opened, keep refrigerated and consume within 1 month.

  • Refrigerator Method (No-Can Option): Skip the boiling water bath, let jars cool to room temperature, and place directly in the fridge. Best enjoyed after resting 24 hours to let flavors meld; keeps refrigerated for up to 4–6 weeks.

Nutrition Information

Serving Size: 1 Tablespoon (approx. 15g)

Servings Per Recipe: ~48 servings (6 pint jars)

Nutrient Amount Per Serving % Daily Value*
Calories 25 kcal —
Total Fat 0.1 g 0%
Saturated Fat 0.0 g 0%
Trans Fat 0.0 g —
Cholesterol 0 mg 0%
Sodium 110 mg 5%
Total Carbohydrates 6.2 g 2%
Dietary Fiber 0.4 g 1%
Total Sugars 5.4 g —
Added Sugars 5.0 g 10%
Protein 0.3 g 1%
Vitamin C 4.2 mg 5%
Calcium 6 mg 0%
Iron 0.1 mg 1%
Potassium 38 mg 1%

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