Are you wondering what to do with all those zucchini that you grew this summer? In my household, I can only bake so much zucchini bread and chocolate zucchini bread and sneak pieces of zucchini into my sauces and casseroles before the boys start rolling their eyes….
Did you know that just one zucchini plant can yield between 3 and 9 pounds of zucchini? So if you plant a few, you will be very busy cooking up and sharing your harvest with the neighbours. Sometimes I overlook a zucchini plant and the resulting fruit become oversized – resulting in even more zucchini to deal with.
Zucchinis are best eaten when they are about 8 or 9 inches long and haven’t widened out and developed big seeds. Zucchini is a summer squash, and is also called Courgette. The zucchini is really a “baby marrow”. So my oversized forgotten and neglected zucchinis are really a marrow.

They can still be eaten when they get oversized, but they may get bitter – this means they have developed too much cucurbitacins – which is a toxin. According to Wikipedia:
“Members of the plant family Cucurbitaceae, which includes zucchini / marrows, pumpkins and cucumbers, can contain toxins called cucurbitacins. These are steroids which defend the plants from predators, and have a bitter taste to humans.“

So, the best thing to do is to check to make sure the zucchini hasn’t gotten mushy anywhere – and I just taste tested a few little pieces – mine was not bitter at all.
I finely diced the zucchini and came up with about 5 cups after I took the seedy bits out of the centre. I had everything onhand to prepare Zucchini Relish from the Better Homes and Gardens “You Can Can” Cookbook – which is one of my favourite preserving cookbooks. I have made this recipe many times.
This Zucchini Relish has a nice zippy “mustardy” flavour that is great on Hot Dogs – and anything!
Ingredients:
5 cups finely diced zucchini (I can’t say I’m very good at dicing – my pieces are likely a little too big – but we love the crunchy relish on burgers and hot dogs at our house)
1.5 cups finely chopped onion (the recipe calls for 3 medium onions – I found one large white onion gave me a cup and a half!)
3/4 cups each diced red and green pepper (I used 3/4 cups red and 3/4 cups yellow bell peppers because that’s what I grew – and I think the yellow is a nice contrast with the red, white and green in the relish)
1/4 cup pickling salt
1 3/4 cups granulated sugar
1 1/2 cups white vinegar
1/4 cup water
1 teaspoon celery seeds
1 teaspoon ground turmeric
1/2 teaspoon mustard seeds
Optionally – 1 or 2 drops green food colouring – I do not use this at all – I like the nice yellow mustardy colour of this relish with the contrasting red peppers and bits of green zucchini. It doesn’t need more colour!
Directions:
In a large non-metal bowl (I used a glass one) mix diced zucchini, onion and peppers. Pour pickling salt over the vegetables. Pour about 4 or 5 cups of water over the vegetables and salt – enough that all vegetables are submerged.

Let the vegetables sit for about 3 hours. I put my bowl in the refrigerator.
This recipe makes about 5 500ml jars of relish. Sterilize 5 500ml jars and rings in boiling water for 10 minutes. (I always sterilize a few extra jars in hopes of producing more.) Set the jars and rings on a clean surface – ready to use. Reserve the pot of water to warm the snap lids later and to boil the finished jars. I do this step (jar sterilization) after the vegetables have been sitting for 3 hours and before I prepare the spices – so that the jars are still warm when I put the relish in.


After the vegetables have rested for 3 hours – mix 1/4 cup water, sugar, vinegar and spices in a large stainless steel pot. Bring to a boil, and then let simmer stirring for 3 minutes. At about the same time – drain and rinse the vegetables.

Add strained/rinsed zucchini, sweet pepper and onion mix to the pot. Bring to a boil and boil gently for about 10 minutes


Turn off heat. Ladle relish evenly into the sterilized jars. I used a spoon to distribute the solid parts of the relish between each jar. Then I used a ladle to pour the liquid that was left behind over the solid vegetables. Press the vegetables down in the jars so that they are fully submerged in the liquid.
Warm the snap lids in pot of hot water to soften seals for a few minutes. Remove lids from water and set aside.
Wipe the jar rims clean. Centre the snap lids on the jars, and screw on the rings to fingertip tight.

Place the jars upright in water pot – ensure that the jars are covered with at least one inch of water. Bring jars and water to a full boil – for 10 full minutes.
Turn off heat. Let the jars sit for 5 minutes. Remove jars from water while keeping upright to cool on a heat proof surface. Let sit for 24 hours. As each jar cools, the lid will contract and seal – curving inward. You should hear a pop when this happens.


Below is a printable recipe card from RecipesGenerator. Please give it a try!

Zucchini Relish
Ingredients
- 5 cups finely diced zucchini
- 1.5 cups finely chopped onion
- 3/4 cups each diced red and green pepper
- 1/4 cup pickling salt
- 1 3/4 cups granulated sugar
- 1 1/2 cups white vinegar
- 1/4 cup water
- 1 teaspoon celery seeds
- 1 teaspoon ground turmeric
- 1/2 teaspoon mustard seeds
- Optionally – 1 or 2 drops green food colouring
Instructions
- In a large non-metal bowl mix diced zucchini, onion and peppers.
- Pour pickling salt over the vegetables. Pour about 4 or 5 cups of water over the vegetables and salt until all vegetables are submerged.
- Let vegetables sit for about 3 hours in the refrigerator.
- Sterilize 5 500ml mason jars and rings in boiling water for 10 minutes. Set the jars and rings on a clean surface – ready to use. Reserve pot of water to warm the snap lids later and to boil the finished jars. Do this step after the vegetables have been sitting for 3 hours – before I prepare the spices – so that the jars are still warm when I put the relish in.
- After 3 hours, prepare the “brine” or spice mix. Mix 1/4 cup water, sugar, vinegar and spices in a large stainless steel pot.
- Bring to a boil, and then let simmer, stirring for 3 minutes. At about the same time – drain and rinse the vegetables.
- Add strained/rinsed zucchini, sweet pepper and onion mix to the pot. Bring to a boil and boil gently for about 10 minutes
- Turn off heat. Ladle relish evenly into the sterilized jars. Distribute the solid parts of the relish between each jar. Pour the liquid that is left behind over the solid vegetables. Press the vegetables down in the jars so that they are submerged in the liquid.
- Warm the snap lids in pot of hot water to soften seals for a few minutes. Remove lids from water and set aside.
- Wipe the jar rims clean. Centre the snap lids on the jars, and screw on the rings to fingertip tight.
- Place the jars upright in water pot – ensure that the jars are covered with at least one inch of water. Bring jars and water to a full boil – for 10 full minutes.
- Turn off heat. Let the jars sit for 5 minutes. Remove jars from water while keeping upright to cool on a heat proof surface. Let sit for 24 hours. As each jar cools, the lid will contract and seal – curving inward. You should hear a pop when this happens.
Nutritional information is calculated automatically using “natural language processing” within the software, and is not guaranteed to be accurate, but is a “good guess”!
Now – for dinner tonight, I think it’s going to be hot dogs with zucchini relish and chocolate zucchini bread, and maybe a side of zucchini salad……
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A relish – very intriguing!
This one is nice and crunchy and mustardy!
A nice recipe! Our zucchini gut has finally dwindled.
It’s sad when garden season is over, but time to think about next year.
There’s always the next garden to plan!
This is helpful! I don’t know why, but I’m a little spooked about this part of the canning process. Thanks for breaking it down this way!
You are very welcome. Glad you liked it!
Strange to say. I can’t get them to produce…and rarely does anyone give me some.
I wonder why that is Bernie? I always forget them and then am surprised by giant zucchinis hiding under my tomato plants later in the season.
I really don’t know. Out of 14 years I’ve been successful 1… bad odds hey. Same with squash and pumpkin.
The squirrels steal my pumpkin seeds every time!
Probably won’t make it to the jars section, however am definitely making this relish!
Thanks and good luck!