Pickled Red Onions From 'The Artisan Jewish Deli at Home'

Ingredients

• 1/2 teaspoon whole clovesTBD
• 1 teaspoon crushed red pepper (optional)TBD
• 3 cups apple cider vinegarTBD
• 1/4 teaspoon kosher saltTBD
• 1/2 teaspoon black peppercornsTBD
• 1 large red onion (about 12 ounces), halved and thinly slicedTBD
• 1 (2- to 3-inch) cinnamon stickTBD
• 2 bay leavesTBD
• 1 1/2 cups granulated sugarTBD