Pickled Red Onions
large red onion
sliced into thin rings
part red wine vinegar
part seasoned rice wine vinegar
whole coriander seeds
red pepper flakes
Place the sliced onions and spices into a quart sized mason jar, then cover completely with equal parts of each vinegar.
Add the agave, and shake to combine.
Refrigerate the onions overnight, then use within 3 weeks.