1: Heat 1 tsp (5mL) oil in medium skillet over high heat. Add pastrami and cook, stirring, until slightly crispy, about 4 minutes. Remove from skillet and cool. Meanwhile, combine ground beef and sauerkraut. Add cooled pastrami, salt and pepper and mix well. Divide into 4 patties. Preheat barbeque grill to high.
2: Lightly brush one side of each patty with oil. Place oiled side down on hot grill and then oil top side. Cook, 3-5 minutes per side, or until an internal temperature of 160°F (71°C) is reached. Meanwhile, toast buns on grill.
3: Spread tops and bottoms with Thousand Island Dressing. Place cooked patties on bottom buns, top with additional sauerkraut and Swiss cheese. Return to barbeque and cook on low heat, until cheese melts, about 2 minutes.
: Top with toppings, bun tops and enjoy.