Zucchini Relish
Zucchini Relish is a sweet, tangy, and slightly spiced condiment made from finely chopped or shredded zucchini, onions, and bell peppers simmered in a vinegar-sugar brine. It’s a classic homemade preserve often used as a topping for burgers, hot dogs, sandwiches, or even mixed into salads and potato dishes. The balance of sweetness, acidity, and gentle spice makes it a versatile pantry staple that adds bold flavor to everyday meals. This relish is also a great way to use up an abundant zucchini harvest.
Prep Time: 30–40 minutes
Cook Time: 30–35 minutes
Cooling & Resting: 12–24 hours (for best flavor development)
Total Time: 1 hour 10 minutes + resting
Yield: Approximately 6–8 jars (depending on size)
Ingredients
Core Ingredients
10 cups zucchini, shredded or finely diced
4 cups onions, finely chopped
2 cups red bell peppers, finely chopped
2 cups green bell peppers, finely chopped
The Brine
2½ cups white vinegar or apple cider vinegar
2½ to 4 cups granulated sugar (adjust to taste)
2 tablespoons salt
Thickener
2 tablespoons cornstarch mixed with 2 tablespoons water (slurry)
Key Spices and Flavorings
2 teaspoons dry mustard or mustard seeds
2 teaspoons celery seeds
1 teaspoon turmeric powder
½ teaspoon nutmeg or coriander (optional)
1 teaspoon curry powder (optional for depth)
½ teaspoon red pepper flakes or finely chopped jalapeños (optional for heat)
Black pepper to taste
Instructions
Prepare the Vegetables
Wash and finely shred or dice the zucchini. Chop onions and bell peppers into small, even pieces.
Place all vegetables in a large bowl and sprinkle with salt. Let sit for 2–3 hours or overnight in the refrigerator. This helps draw out excess moisture. Drain and gently squeeze out remaining liquid.
Make the Brine
In a large pot, combine vinegar, sugar, mustard seeds, celery seeds, turmeric, and other spices.
Bring to a gentle boil over medium heat, stirring until sugar is fully dissolved.
Cook the Vegetables
Add the drained zucchini mixture into the pot.
Simmer for 25–30 minutes, stirring occasionally, until vegetables become tender and flavors blend.
Thicken the Relish
Mix cornstarch with water to create a smooth slurry.
Slowly stir it into the simmering relish.
Cook for another 3–5 minutes until the mixture thickens slightly and becomes glossy.
Cool and Store
Remove from heat and let the relish cool completely.
Transfer into sterilized jars and seal.
For best flavor, let it sit for 24 hours before serving.
Tips
Always drain zucchini thoroughly to prevent watery relish.
Use a food processor for quick and uniform vegetable chopping.
Allowing the vegetables to rest with salt improves texture and flavor concentration.
Adjust sugar gradually based on your preferred sweetness level.
Stir frequently while simmering to prevent sticking or burning.
Use apple cider vinegar for a slightly fruity, deeper flavor.
Sterilize jars properly if storing long-term.
Letting the relish rest overnight enhances the overall taste.
Do not overcook vegetables or they will become mushy.
Store in small jars for easier use and freshness retention.
Variations
Add shredded carrots for extra color and sweetness.
Include finely chopped jalapeños for a spicy zucchini relish.
Use honey or brown sugar instead of white sugar for deeper flavor.
Add grated ginger for a warm, aromatic twist.
Mix in corn kernels for a chunky relish texture.
Replace turmeric with smoked paprika for a smoky version.
Add dill seeds for a more pickle-like flavor profile.
Use zucchini and cucumber together for a mixed vegetable relish.
Make a low-sugar version using a sugar substitute.
Add garlic for a stronger savory kick.
Frequently Asked Questions
How long does zucchini relish last?
Properly sealed and refrigerated jars last up to 2–3 months. Canned versions last longer.
Can I freeze zucchini relish?
Yes, it can be frozen in airtight containers for up to 6 months.
Why is my relish watery?
Zucchini was not drained properly before cooking.
Do I need to peel zucchini?
No, the skin adds color and texture.
Can I reduce the sugar?
Yes, but it may slightly change the balance and preservation quality.
Can I skip cornstarch?
Yes, but the relish will be slightly thinner.
What can I use zucchini relish for?
It’s great on burgers, sandwiches, hot dogs, wraps, or as a side condiment.
Can I can this relish for long-term storage?
Yes, using proper sterilization and water bath canning methods.
Why does my relish taste too sour?
Increase sugar slightly or allow it to rest for a day.
Can I make it spicy?
Yes, add jalapeños or chili flakes to taste.
Nutrition
Per Tablespoon (Approximate)
Calories: 25
Protein: 0g
Carbohydrates: 6g
Fat: 0g
Sodium: 60mg
Sugar: 5g
Fiber: 0.5g
Vitamin C: 4% Daily Value
Vitamin A: 3% Daily Value
Conclusion
Zucchini Relish is a vibrant, tangy, and slightly sweet condiment that transforms simple meals into something special. With its balance of fresh vegetables, warm spices, and zesty vinegar brine, it’s perfect for preserving summer zucchini and enjoying year-round. Easy to customize and store, this homemade relish is a flavorful addition to any kitchen pantry and pairs beautifully with a wide range of savory dishes.