These easy Mexican Pickled Onions add a punch of tangy flavor and a burst of bold color to all your favorite Mexican recipes. This 4-ingredient recipe is super quick to make and adds the perfect finishing touch to tacos, salads, chilis, and more!
1large red onionsliced thinly (approximately 1 ½ cup sliced onion)
2cupsboiling hot water
¾cupfresh lime juice*
2tablespoonsapple cider vinegarred wine vinegar
1teaspoonkosher salt
Optional Add Ins:
1garlic clovesliced thinly (⅛ inch thick slices)
½small jalapenoslice thinly - remove seeds if you like
¼teaspooncumin seeds
¼whole black peppercorns
1teaspoonhoneymaple syrup or granulated sugar
1bay leaf
¼teaspoonoreganoMexican oregano if you can get your hands on
½teaspoonall spice berries
Pinchof red pepper flakes
Instructions
Place red onion slices in a colander set in a bowl. Pour 2 cups of boiling water over the onion. Gently press with a spoon to make sure that the onions are fully submerged in water. Let it sit for 45 seconds.
Transfer the now-drained onion slices to a jar with a tight-fitting lid. Pour fresh lime juice and apple cider vinegar over the onions. Add in the salt.
If you are using any of the optional add-ins, go ahead and add them in.
Put the lid on and shake until everything is fully combined.
Place it in the fridge and let it sit for at least 2 hours.
Serve with your favorite taco, salad, or grain bowl recipes as garnish.
Video
Notes
Lime juice: I highly recommend using freshly squeezed lime juice here, but in a pinch, you can also use store-bought lime juice.
Storage: If you have leftovers, place them in an airtight container in the fridge for up to 2 weeks.
They lose volume as they sit in lime juice and vinegar mixture: When you are first placing them in the jar it might feel like you have a lot, but keep in mind that as they sit in the acidic brine juice, they lose some of their volume.
Weck Jars or Pint Size Mason Jars are ideal: I use Weck jars for pickling (as you see in the photos), but pint-sized Mason Jars are also ideal. Just make sure that they have a large mouth and a tight-fitting lid.