Pickled Red Onion (2 Ingredients)

Sterilize a jar of your choice. I do this by boiling or steaming it for 10-15 minutes. Dry it first.

Peel the onion. Slice it thinly. Put it on the jar.

Add distilled white vinegar until it fills 2/3 of the jar. Put the cap on.

Shake the jar a few times. After an hour or two, put it on the fridge. Enjoy it the following day!