Pickled Red Onions

Directions:

1. For the Pickled Red Onions, add sliced onions to a container that has a tight lid; mason jars work well.
2. Add the next 4 ingredients to a small pot over medium high heat. Bring to a boil, making sure that the salt and sugar dissolve completely.
3. Remove from heat, and pour over onions. Add crushed red pepper flakes to mixture, if desired.
4. Allow onion mixture to cool to room temperature; cover with lid and refrigerate until ready to use. Wait 2 hours before using.