| 2 | tbsp | Mayonnaise |
| 1 | tbsp | Prepared horseradish |
| 1 | tbsp | Prepared mustard |
| 1 | tbsp | Onion, chopped |
| 8 | slices | Rye bread |
| 4 | slices | Swiss cheese |
| 8 | slices | Cooked ham |
Combine mayonnaise, mustard, horseradish and onion in a small bowl and mix well. Spread on four slices of bread. Layer with ham and cheese and top with remaining bread.