These sandwiches cry out for a good garlic dill pickle, purchased German potato salad or crunchy potato chips and a side of deli slaw.
To make this a portable potluck sandwich, stir the sliced beef into the sauerkraut. Place the dressing in a squeeze bottle (like for ketchup), and set out a basket of rye buns and smaller slices of Swiss cheese to make it easy for guests to make their own sandwiches.
Need a hearty party snack? Build the sandwiches on slices of party rye for a three-bite treat.