Sweet-and-tangy candied jalapeños simmered in a syrup of sugar and apple cider vinegar. Perfect as a condiment, topping, or snack — can be refrigerated or water-bath canned for shelf stability.
Slice stems off jalapeños and cut into 1/4-inch rounds. Remove seeds for milder jars or leave them for more heat. Wear gloves if desired.
Wash jars and lids in hot soapy water. If canning, keep jars warm in simmering water until ready to fill.
Combine sugar, apple cider vinegar, water, salt, mustard seeds, celery seed, and turmeric in a heavy saucepan. Bring to a boil, stirring until sugar dissolves.
Add sliced jalapeños and red pepper flakes to the syrup. Reduce heat and simmer for 8–12 minutes until peppers are translucent and syrup is slightly thickened.
Pack hot jalapeños into warm jars leaving 1/2 inch headspace. Pour hot syrup over peppers to cover, wipe rims, and seal with lids and bands.
For shelf stability, process jars in a boiling-water bath for 10 minutes. Alternatively, cool and refrigerate jars; wait at least 24 hours before eating. Flavor improves after several days.
Notes
Label jars with the date. Properly processed jars will keep about 1 year in a cool pantry; refrigerated jars last 2–3 months.
Adjust sugar to your taste — reduce to 2 1/2 cups if you prefer less sweet.
If you’re new to canning, follow a trusted water-bath canning guide for your altitude.
Use a mix of green and ripening jalapeños for visual appeal and flavor depth.