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Wait for the oven to preheat, about 15 minutes. Cover the bottom of a large baking sheet with aluminum foil or parchment paper, and place a wire cooling rack on top. The foil or parchment paper will catch any mess, which will make cleaning up much easier. If you don't have a wire rack, just cover the baking sheet in parchment paper. A rack will make your bacon crispier, but you can still make candied bacon without one. Add the sugar, rice vinegar, and maple syrup in a large bowl. Stir until all ingredients are fully mixed. Take the bacon and place it on top of the wire rack. Space each slice out evenly, making sure that none of them are overlapping. If you don't have a wire rack, just place the bacon on the baking sheet. Don't add the glaze just yet: first you will partially cook the bacon.
Preheat the oven to 350 (176.6 Celsius) degrees. Prepare the baking sheet. Mix the glaze ingredients. Place the bacon on the wire rack and put the tray in the oven.