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Gather 15 to 20 small red onions for this recipe of onion pickle.
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You can also use 8 to 10 shallots or pearl onions, depending on your preference.
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Peel the onions carefully, remove as much of the skin on the outside as you can, and trim back the root ends as much as possible.
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Put the peeled onions aside in a bowl.
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Now, prepare the brine for the pickle. Take a mixing bowl and add one teaspoon of white vinegar or apple cider vinegar along with ¼ cup of filtered water.
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This will give your pickle that vinegary flavour.
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Apple cider vinegar offers a faint, fruitier taste to the pickle.
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Add ¾ teaspoon of salt to this brine or adjust according to your taste. Salt draws water from onions and allows the flavours to combine; it also helps preserve the pickle for a long time.
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Stir well until the salt is entirely dissolved in the vinegar-water solution. That brine will not only pickle the onions, but it'll also keep them fresh and crispy, ensuring that all bites are crunchy and tangy.
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Now mix the brine with the onions.
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Add the peeled and sliced or whole onions into the bowl of the brine.
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Sliced onions are simply going to be more exposed to the brine, and therefore, they are absorbed faster by the brine.
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Place whole onions or shallots into the brine.
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Pour into a bowl, cover it with its lid or plastic wrap, and let it sit at room temperature for at least 30 minutes or up to an hour.
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This will enable the onions to absorb the vinegar and salt. For a more robust pickling flavour, you can refrigerate the onions and store them overnight, which will do much to enhance the tangy taste and create a more robust pickle.
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This sweet and sour onion pickle is now ready for service.
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The tanginess of the vinegar and the crunch of the onions complement this versatile and delightful side dish.
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The longer you let the onions stay in the brine, the stronger the pickle will be.
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So, if you can wait, marinate the onions for a day or two to get an even more intense flavour.
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This recipe of onion pickle combines the tangy flavours of vinegar and salt with crunchy onions, creating a perfect accompaniment to any meal.