Poutine Burger (Burgers With Fried Potatoes, Cheese Curds, and Gravy)

Instructions

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1. 1 Rinse cut potatoes in a bowl of cold water, changing water as necessary until water runs clear. Drain carefully and dry on paper towels.
2. 2 In a deep cast iron skillet, fryer, or wok, heat oil to 350°F (175°C). Carefully lower potatoes into oil. Cook potatoes without moving, adjusting heat to maintain temperature, until bubbles from potatoes slow down and potatoes are a pale golden blond, about 3 minutes. Continue cooking, agitating potatoes occasionally with a metal spider or tongs until potatoes are deep golden brown, about 3 minutes longer. Carefully transfer potatoes to a paper towel-lined bowl and season immediately with salt. Allow to cool completely. After cooling, potatoes can be stored in an airtight container at room temperature for up to 3 days.
3. 3 When ready to serve, season burger patties generously with salt and pepper and cook burgers to desired doneness on a hot grill or in a skillet on the stovetop, 125°F (52°C) for medium rare or 135°F (57°C) for medium. Transfer to a plate and allow to rest for 5 minutes.
4. 4 While burgers rest, toast buns until golden brown. Place onions on bottom bun (if using). Top with burger patties, cheese curds, fried potatoes, and hot gravy. Close burgers. Serve immediately.