Slice the red onion into long thin strips and separate.
Add separated red onions to a mason jar.
In a small sauce pot, heat the water, vinegar and sugar until it starts to boil and remove from heat. Let cool for 5 minutes.
Add all the spices and heated water and vinegar into the mason jar. Stir to incorporate.
Let cool completely before covering and refridgerating.
This will keep about a month in the fridge in an air tight mason jar.
Notes
** Note ** When adding hot liquids to mason jars, make sure that the temperature of the jar is not cold. The extreme difference in temperature can cause the jar to shatter.