This zucchini relish recipe is a delightful way to preserve the fresh flavors of summer. Perfect as a condiment, it adds a tangy and sweet touch to sandwiches, burgers, and grilled meats. The combination of zucchini, onion, and bell peppers creates a vibrant and colorful relish that is sure to impress.
While most of the ingredients in this recipe are commonly found in your pantry, you might need to pick up celery seed and mustard seed at the supermarket. These spices add a unique flavor to the relish, making it stand out. Be sure to check the spice aisle for these small but essential ingredients.

Ingredients For Zucchini Relish Recipe
Zucchini: Finely chopped to create the base of the relish.
Onion: Adds a sharp and savory flavor.
Red bell pepper: Provides sweetness and color.
Green bell pepper: Adds a mild, slightly bitter taste and color.
Sugar: Balances the acidity and adds sweetness.
White vinegar: Acts as a preservative and adds tanginess.
Salt: Enhances the overall flavor.
Celery seed: Adds a subtle, earthy flavor.
Mustard seed: Contributes a mild, tangy heat.
Technique Tip for Making Relish
When chopping the zucchini, onion, and bell peppers, aim for uniform pieces to ensure even cooking and a consistent texture in your relish. Using a food processor can speed up the process and provide a more uniform chop.
Suggested Side Dishes
Alternative Ingredients
zucchini - Substitute with cucumber: Cucumber has a similar texture and mild flavor, making it a good replacement in relish.
onion - Substitute with shallots: Shallots provide a milder and slightly sweeter flavor compared to onions.
red bell pepper - Substitute with pimentos: Pimentos have a similar sweetness and color, making them a suitable alternative.
green bell pepper - Substitute with yellow bell pepper: Yellow bell peppers have a similar texture and sweetness, providing a good color contrast.
sugar - Substitute with honey: Honey can add a natural sweetness and a slight floral note to the relish.
white vinegar - Substitute with apple cider vinegar: Apple cider vinegar has a similar acidity with a slightly fruity flavor.
salt - Substitute with sea salt: Sea salt can provide a similar level of saltiness with a slightly different mineral profile.
celery seed - Substitute with caraway seed: Caraway seeds have a similar earthy flavor that can complement the relish.
mustard seed - Substitute with ground mustard: Ground mustard can provide a similar tangy flavor, though it will be more evenly distributed.
Alternative Recipes Similar to This Relish
How To Store or Freeze Your Relish
Ensure your jars are thoroughly sterilized before storing the zucchini relish. This can be done by boiling them in water for 10 minutes or running them through a hot cycle in the dishwasher without detergent.
Once the relish has cooled, carefully ladle it into the sterilized jars, leaving about ½ inch of headspace at the top. This allows for expansion during the freezing process.
Wipe the rims of the jars with a clean, damp cloth to remove any residue that might prevent a proper seal. Secure the lids tightly.
Label each jar with the date and contents. This helps you keep track of freshness and ensures you use the oldest jars first.
For short-term storage, place the jars in the refrigerator. The zucchini relish will stay fresh for up to 3 months.
For long-term storage, consider freezing the jars. Make sure they are freezer-safe to prevent cracking. The relish can be frozen for up to a year.
When ready to use, thaw the relish in the refrigerator overnight. Avoid thawing at room temperature to maintain the best texture and flavor.
If you prefer, you can also use freezer-safe plastic containers or heavy-duty freezer bags. Just ensure to remove as much air as possible before sealing to prevent freezer burn.
Always check the relish for any signs of spoilage before consuming, such as an off smell, discoloration, or mold. If in doubt, it's safer to discard.
Essential Tools for Making Relish
Large pot: Used to combine and cook the zucchini, onion, red bell pepper, green bell pepper, sugar, vinegar, salt, celery seed, and mustard seed.
Cutting board: Provides a surface for finely chopping the zucchini, onion, and bell peppers.
Chef's knife: Essential for finely chopping the vegetables.
Measuring cups: Used to measure out the zucchini, onion, bell peppers, sugar, and vinegar accurately.
Measuring spoons: Used to measure out the salt, celery seed, and mustard seed.
Stirring spoon: Used to stir the mixture while it cooks to ensure even cooking and prevent sticking.
Sterilized jars: Used to store the cooled zucchini relish safely.
Jar lifter: Helps in handling the hot sterilized jars safely.
Ladle: Used to transfer the relish into the sterilized jars.
Time-Saving Tips for Making Relish
Prepare ingredients in advance: Chop the zucchini, onion, and bell peppers the night before to save time on the day of cooking.
Use a food processor: Quickly chop the vegetables using a food processor instead of doing it by hand.
Measure spices ahead: Pre-measure the salt, celery seed, and mustard seed and store them in small containers.
Sterilize jars in advance: Sterilize your jars the day before to streamline the process.
Batch cooking: Double the recipe and freeze half for future use, saving time on future meal prep.

Zucchini Relish Recipe
Ingredients
Main Ingredients
- 4 cups Zucchini, finely chopped
- 1 cup Onion, finely chopped
- 1 cup Red bell pepper, finely chopped
- 1 cup Green bell pepper, finely chopped
- 2 cups Sugar
- 2 cups White vinegar
- 1 tablespoon Salt
- 1 teaspoon Celery seed
- 1 teaspoon Mustard seed
Instructions
- 1. Combine zucchini, onion, red bell pepper, and green bell pepper in a large pot.
- 2. Add sugar, vinegar, salt, celery seed, and mustard seed to the pot.
- 3. Bring the mixture to a boil over medium heat, stirring occasionally.
- 4. Reduce heat and simmer for 30 minutes, stirring occasionally.
- 5. Remove from heat and let cool. Store in sterilized jars.
Nutritional Value
Keywords
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