Peel the onion, cut it in half, and slice into very thin half rounds.
Cut the lime in half. In a small bowl squeeze out the juice using your hands or a squeezer. Add the salt and the honey, or sugar. Stir to combine.
Add your onion slices and stir up well. Taste for salt and add a pinch more if needed.
Let the flavors meld while you cook the rest of your meal, or store them in the fridge for later use.
Notes
Tip: Use a small container with a lid to combine all of the ingredients and then give it a shake every so often until you're ready to eat. Enjoy your onions on tacos, burritos, eggs, potatoes, sandwiches, salads, and more.For honey or sugar start with 1 teaspoon for a large onion. You can add more to taste if you like your pickled onions sweeter.