INGREDIENTS
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2 large egg yolks
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2 tablespoons fresh lemon juice, divided
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1 cup grapeseed or vegetable oil
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Kosher salt
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Vegetable oil (for frying; about 8 cups)
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3 pounds Yukon gold potatoes (about 8), cut into 1/4" sticks
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Kosher salt
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2 pounds ground beef, preferably ground chuck (20% fat)
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Kosher salt, freshly ground pepper
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4 slices aged white cheddar
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4 soft brioche rolls, split, toasted
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Bibb lettuce and pickled red onion (click here for recipe; for serving)
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A deep-fry thermometer