Ingredients
Yield: ~1 quart (or ~2 pint jars)
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10 fresh jalapeños, thinly sliced into rings (wear gloves!)
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1 small onion, thinly sliced (yellow or red onion adds a subtle sweetness)
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1 cup white vinegar (5% acidity)
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1 cup granulated sugar
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½ cup water
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1 tablespoon mustard seeds
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1 teaspoon celery seeds
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½ teaspoon ground turmeric
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½ teaspoon salt (preferably kosher or pickling salt)
Optional: a pinch of chili flakes or sliced garlic for extra depth.
Instructions
1. Prepare the produce
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Wash and slice the jalapeños into thin rings. For less heat, remove some seeds. For a spicier bite, leave them in. Pro tip: Wear gloves to protect your skin.
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Slice the onion thinly using a sharp knife or mandoline for uniform thickness.
2. Combine the jalapeños and onions
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In a medium-sized bowl, toss together the sliced jalapeños and onions.
3. Make the brine
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In a small saucepan, combine the vinegar, sugar, water, mustard seeds, celery seeds, turmeric, and salt.
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Bring the mixture to a gentle boil over medium heat, stirring until the sugar dissolves completely.
4. Pour the brine
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Once the brine is hot and fully mixed, carefully pour it over the jalapeños and onions in the bowl. Stir gently to coat all the slices.
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Let the mixture sit for 15–30 minutes, stirring occasionally to help the vegetables absorb the brine.
5. Transfer to jars
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After cooling slightly, use tongs or a slotted spoon to transfer the jalapeños and onions into clean, sterilized glass jars.
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Pour the remaining brine over the top to fully submerge the pickles. Leave about ½ inch headspace.
6. Chill and set
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Seal jars with lids and let them cool to room temperature before refrigerating.
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For best flavor, refrigerate for at least 24 hours before enjoying.
Notes
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You can slice the jalapeños and onions the day before and refrigerate them in an airtight container.
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Double or triple the batch to make extra for gifting or meal prepping.
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These pickles taste better after a few days as the flavors deepen.
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Freeze extra brine for your next batch.