Heat deep fryer or 2 inches of oil to 350°F. With a mandolin, slice potatoes paper thin, place in water until ready to use. Strain and pat potatoes dry with cloth, carefully place potatoes in hot oil until golden and crisp. Place fried potatoes on paper towel to soak up some of the grease and sprinkle with salt and pepper.
Dip
Place onions and brown sugar in hot oil and simmer covered till caramelized, about 45 minutes. Pulse onions and rest of ingredients in a food processor until blended and cheese is mostly broken up, but still a little chunky. Chill and serve with crisps and a glass of Train Wreck.