Transform your garden-fresh zucchini into a delightful relish that adds a burst of flavor to any dish. This zucchini relish is perfect for topping hot dogs, burgers, or even as a tangy side for your favorite meals. With a blend of vegetables and spices, this recipe is a great way to preserve the summer harvest.
Some ingredients in this recipe might not be staples in every kitchen. Celery seed and mustard seed are spices that add unique flavors to the relish but may not be commonly found in your pantry. Make sure to check the spice aisle at your supermarket for these. Additionally, ensure you have enough apple cider vinegar and sugar on hand, as they are crucial for the pickling process.

Ingredients for Zucchini Relish Recipe
Zucchini: Finely chopped to create the base of the relish.
Onions: Adds a sharp, savory flavor to the mix.
Green bell peppers: Provides a mild, sweet taste and vibrant color.
Red bell peppers: Adds sweetness and a pop of color.
Salt: Used to draw out moisture from the vegetables.
Sugar: Balances the acidity and adds sweetness.
Apple cider vinegar: Essential for the pickling process, adding tanginess.
Celery seed: Adds a subtle, earthy flavor.
Mustard seed: Provides a mild, tangy spice.
Technique Tip for Making Zucchini Relish
When chopping the zucchini, onions, and bell peppers, aim for uniform pieces to ensure even cooking and a consistent texture in the final relish. Using a food processor can help achieve this quickly and efficiently.
Suggested Side Dishes
Alternative Ingredients
zucchini - Substitute with cucumber: Cucumbers have a similar texture and water content, making them a good alternative in relish recipes.
onions - Substitute with shallots: Shallots provide a milder flavor and can be used in the same quantity as onions.
green bell peppers - Substitute with poblano peppers: Poblano peppers offer a slightly smoky flavor and similar texture.
red bell peppers - Substitute with yellow bell peppers: Yellow bell peppers have a similar sweetness and texture to red bell peppers.
salt - Substitute with kosher salt: Kosher salt has a similar flavor but may require slight adjustments in quantity due to grain size.
sugar - Substitute with honey: Honey provides a natural sweetness and can be used in a slightly lesser amount due to its higher sweetness level.
apple cider vinegar - Substitute with white wine vinegar: White wine vinegar has a similar acidity and can be used in the same quantity.
celery seed - Substitute with dill seed: Dill seed offers a similar aromatic quality and can be used in the same quantity.
mustard seed - Substitute with ground mustard: Ground mustard provides a similar flavor profile and can be used in a slightly lesser amount.
Alternative Recipes Similar to Zucchini Relish
How to Store or Freeze Your Zucchini Relish
Ensure your zucchini relish is completely cooled before storing. This helps maintain its texture and flavor.
For short-term storage, transfer the relish into airtight containers or jars. Keep these in the refrigerator, where they will stay fresh for up to 2 weeks.
For long-term storage, use sterilized jars and a boiling water bath to seal the relish. This method ensures the relish can be stored in a cool, dark place for up to a year.
If you prefer freezing, portion the relish into freezer-safe bags or containers. Leave some headspace to allow for expansion. Label with the date and freeze for up to 6 months.
When ready to use, thaw the frozen relish in the refrigerator overnight. Stir well before serving to redistribute any separated liquids.
Always check for signs of spoilage before consuming stored relish. If it has an off smell, unusual color, or mold, discard it immediately.
For best results, use high-quality zucchini and bell peppers to ensure your relish remains vibrant and flavorful throughout its storage life.
How to Reheat Leftovers
For a quick and easy method, use the microwave. Place the zucchini relish in a microwave-safe dish, cover it with a microwave-safe lid or plastic wrap, and heat on medium power for 1-2 minutes. Stir halfway through to ensure even heating.
If you prefer a more traditional approach, reheat the relish on the stovetop. Transfer the desired amount to a small saucepan and warm over medium-low heat, stirring occasionally, until heated through. This method helps maintain the texture and flavor.
For a gentle and even reheating, use a double boiler. Place the relish in the top part of the double boiler and heat over simmering water, stirring occasionally, until warmed. This method prevents scorching and preserves the delicate flavors.
If you have a slow cooker, you can reheat the zucchini relish on the low setting. Transfer the relish to the slow cooker, cover, and heat for about 1-2 hours, stirring occasionally. This method is perfect if you're reheating a larger batch and want to keep it warm for serving.
For a quick and efficient method, use a steamer basket. Place the relish in a heatproof bowl and set it in the steamer basket over boiling water. Cover and steam for 5-7 minutes, stirring once or twice, until heated through. This method helps retain moisture and flavor.
If you have an oven, preheat it to 300°F (150°C). Spread the zucchini relish in an oven-safe dish, cover with aluminum foil, and heat for about 15-20 minutes, stirring halfway through. This method is great for reheating larger quantities evenly.
Essential Tools for Making Zucchini Relish
Large bowl: To combine and let the vegetables sit with salt for an hour.
Colander: To rinse and drain the vegetables well after salting.
Large pot: To combine sugar, apple cider vinegar, celery seed, and mustard seed, and to cook the relish.
Wooden spoon: To stir the mixture in the pot.
Measuring cups: To measure out the zucchini, onions, bell peppers, salt, sugar, and apple cider vinegar.
Measuring spoons: To measure out the celery seed and mustard seed.
Sterilized jars: To pack the relish into for storage.
Jar lifter: To safely handle the hot jars during the boiling water bath process.
Boiling water bath canner: To process the jars of relish for preservation.
Knife: To finely chop the zucchini, onions, and bell peppers.
Cutting board: To provide a surface for chopping the vegetables.
Time-Saving Tips for Making Zucchini Relish
Pre-chop vegetables: Use a food processor to quickly and uniformly chop the zucchini, onions, and bell peppers.
Salt soak shortcut: Reduce the soaking time by using a colander to drain excess moisture from the salted vegetables.
Batch cooking: Double the recipe and make a larger batch to save time on future relish needs.
Sterilize jars efficiently: Sterilize jars in the dishwasher on the sanitize cycle while you prepare the relish.
Quick cooling: Place the hot jars on a cooling rack to speed up the cooling process before storing.

Zucchini Relish Recipe
Ingredients
Main Ingredients
- 10 cups Zucchini, finely chopped
- 4 cups Onions, finely chopped
- 2 cups Green bell peppers, finely chopped
- 2 cups Red bell peppers, finely chopped
- ¼ cup Salt
- 3 cups Sugar
- 2 cups Apple cider vinegar
- 1 tablespoon Celery seed
- 1 tablespoon Mustard seed
Instructions
- 1. Combine zucchini, onions, green and red bell peppers in a large bowl. Sprinkle with salt and let sit for 1 hour.
- 2. Rinse and drain the vegetables well.
- 3. In a large pot, combine sugar, apple cider vinegar, celery seed, and mustard seed. Bring to a boil.
- 4. Add the drained vegetables to the pot. Return to a boil, then reduce heat and simmer for 30 minutes.
- 5. Pack the relish into hot, sterilized jars, leaving ½ inch headspace. Seal and process in a boiling water bath for 10 minutes.
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