Spray board or counter with non-stick cooking spray. Roll dough into a 12 X 18-inch rectangle. With a clean ruler gently mark a 4-inch space down the center. Then mark dough into 2-inch strips horizontally. Pour dressing down the center of the dough. Spread layer of pastrami, then slices of swiss cheese. Top with sauerkraut.
Make cuts on sides from filling to dough edges. Begin braid by folding top row toward filling. Then fold strips left over right, right over left. Fold bottom end towards filling and finish by stretching last strip and tucking under.
Support braid with both hands and place on baking sheet sprayed with non-stick cooking spray. Brush braid with egg white and sprinkle with caraway seeds. Bake at 350 F for 30-35 minutes or until golden brown. Cool slightly and slice to serve.