1 very large red onion very thinly sliced
3/4 cup apple cider vinegar
1/4 cup water
1 t salt
1-2 T sweetener ( sugar, honey, maple syrup, swerve, etc. Your choice)
In a small sauce pan stir together vinegar , water, salt and sweetener. Cook over medium heat until it reaches a simmer.
Place the slices of onion in a mason jar. Pour hot mixture over the onions. Screw on lid and shake to mix well. Make sure all onions are submerged in liquid.
Allow to sit for 30 minutes. You can serve immediately or refrigerate. You can store in fridge up to 2 weeks.
