I had these in a Mexican restaurant with refried beans on corn tortillas and they were delicious in a sort of burger relish kind of way. They are amazing on salads, with any fish or meat or in a toasted cheese sarnie. Anna, http://www.myprimrosehillkitchen.com

Makes approx one jam jar full

Ingredients ️

I medium sized red onion

1 1/2 teaspoons of salt

1 cup of warm water

3 tablespoons of maple syrup

1/2 cup Apple cider vinegar

I old jam jar

Thinly slice the onion, I use a mandolin as it's quicker. In a big bowl mix all the rest of the ingredients till the salt is dissolved, then put the onion in the jar and pour the vinegar mixture over it to the top. Place in fridge for at least a day before using. 

They will keep for a few weeks in the fridge.

Article credit: https://myprimrosehillkitchen.com/