Spicy pickled habanero onions are a quick-to-make Mexican condiment that combines thinly sliced red onions and habanero peppers in a tangy lime-vinegar brine. Ready within hours, they add a bright, fiery kick to tacos, sandwiches, salads, and grilled meats.
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Peel the red onion, cut it in half, and slice it thinly.
Place the sliced onions into a large jar or container with a lid.
For less heat, remove the seeds from the habanero peppers. Slice them thinly and add them to the jar.
Add the optional handful of chile de arbol for extra spice.
Squeeze the juice of three limes into the jar.
Pour in the distilled white vinegar and water.
Add the dried oregano and a generous amount of salt.
Mix all the ingredients together thoroughly. Taste and adjust salt if needed.
Cover the container and refrigerate for at least one hour before serving.
Store in an airtight glass jar in the refrigerator for up to 3 weeks. The pickles actually improve in flavor over the first few days.
The onions soften and flavor develops within 2–4 hours at room temperature, though they're best after 24 hours in the refrigerator. They keep for up to 3 weeks.
Yes. Use fewer habaneros or remove the seeds for less heat, or add more habaneros and chile de arbol for extra spice. The longer they sit, the spicier they become.
Wear gloves to avoid capsaicin oil on your hands. Use a sharp knife and slice perpendicular to the pepper. Avoid touching your face while handling.
Red onions are best for color and mild sweetness, but white onions work if you prefer a sharper bite. Yellow onions are less ideal due to higher sulfur content.
For pickles stored in the fridge for up to 3 weeks, standard clean jars are fine. For shelf-stable storage longer than that, use hot-sterilized jars and process in a water bath.
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