Makes approximately 3 cups of pickled onions
1½ cups water (boiling)
1½ cups citrus champagne vinegar (can substitute regular vinegar)
1 tablespoon salt
¼ cup tablespoon sugar
2 teaspoons cumin seeds
Zest of 1 lime
Juice of 2 limes
4 medium red onions, sliced thin
½ cup fresh cilantro leaves
Shake together all ingredients except the red onions and lime juice until the sugar and salt melt and are incorporated fully. Add the onions and the lime juice and stir well, making sure that the onions are fully submerged in the liquid. Cover tightly with a lid and let stand while the mixture cools. (This cooling process will also partially cook the onions). Once cool, add the cilantro leaves and refrigerate for about 6 hours before serving.
*Store in an airtight container in the refrigerator for up to two weeks.