Ingredients

  • 1 large red onion, halved through core, thinly sliced crosswise
  • 1/2 cup sugar
  • 1/2 cup white wine vinegar
  • 1 1/2 teaspoons coarse kosher salt
  • 1 1/2 teaspoons whole black peppercorns
  • 1/2 cinnamon stick

Method

  • Place onion slices in medium bowl.
  • Bring next 5 ingredients to boil in heavy medium saucepan; pour over onions in bowl.
  • Cover; cool to room temperature.
  • Chill overnight.
  • DO AHEAD: Can be made 3 weeks ahead. Keep chilled.
  • Drain before serving.