Heat 1/4 to 1/2 inch peanut oil in a large heavy-bottomed skillet over medium-high heat until a deep-fry thermometer registers 360. Fry the pork in batches until golden and cooked through, about 3 minutes per side. Drain on paper towels. Spread both halves of each bun with mayonnaise and mustard.Layer the lettuce, tomatoes and onion on the bottom halves. Add a piece of pork and a few pickle slices.Cover with the bun tops.ry the pork in batches until golden and cooked through, about 3 minutes per side. Drain on paper towels. Spread both halves of each bun with mayonnaise and mustard. Layer the lettuce, tomatoes and onion on the bottom halves. Add a piece of pork and a few pickle slices. Cover with the bun tops.