
Creado con IA
Peel and cut the russet potatoes into thin fries. Soak them in cold water for 30 minutes, then drain and pat dry thoroughly.
Heat the sunflower oil in a deep fryer or large pot to 160°C (320°F). Fry the potatoes in batches for 4-5 minutes until soft but not colored. Remove and drain on paper towels.
Increase the oil temperature to 190°C (375°F). Fry the potatoes again in batches for 2-3 minutes until golden and crispy. Drain and sprinkle with sea salt. Set aside and keep warm.
Divide the ground brisket beef into 4 equal portions and shape into burger patties. Season both sides with salt and pepper.
Heat a grill or skillet over medium-high heat. Cook the patties for 3-4 minutes per side for medium, or until desired doneness.
In the last minute of cooking, place a slice of Gruyère cheese on each patty and cover to melt the cheese.
Lightly toast the brioche buns. Spread 1 tbsp of Dijon mustard on the bottom half of each bun.
Place a butter lettuce leaf on each bun, then top with the cheesy brisket patty, 1 tbsp caramelized onions, and the top bun.
Serve the burgers immediately with the hot, crispy frites on the side.