Step 1

Thinly slice the onion and place it into a bowl.

Step 2

Pour boiling water over the onions making sure they are covered. Soak the onions for about 10 minutes.

Step 3

Drain the onions and pat them with a paper towel.

Step 4

Add 1/4 cup of red wine vinegar to the onions and mix them well. Let the onions marinate for 5 to 10 minutes, making sure to stir them a few times.

Step 5

Drain the vinegar leaving about 1 teaspoon in the bowl.

Step 6

Add the rest of the ingredients and stir to combine. Place the onions in the fridge for about 30 minutes before serving.