Make the balsamic glaze: Bring the vinegar to a simmer in a saucepan over medium-high heat. Simmer until syrupy and reduced to about 1/2 cup, 8 to 10 minutes; keep warm or at room temperature.
Make the fries: Heat the oil in a heavy-bottomed pot or Dutch oven over medium heat until a deep-fryer thermometer registers 220 degrees F. Working in batches, add the potatoes and fry until slightly colored but still pale, about 5 minutes. Transfer to a baking sheet using a large slotted spoon; let cool.
Increase the heat to bring the oil temperature to 350 degrees F. Working in batches, return the fries to the hot oil and fry until golden brown, 8 to 10 minutes. Transfer to a paper towel-lined baking sheet using a large slotted spoon. Season immediately with salt and pepper.
Preheat the broiler. Transfer the fries to a heatproof platter or baking sheet. Sprinkle with the cheese and broil until it melts, about 2 minutes. Drizzle with some of the balsamic glaze and sprinkle with the red pepper flakes. Photograph by Kat Teutsch
Tools You May Need
Courtesy of Food Network Magazine
Tools You May Need
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