1. Prepare the cabbage: place in a colander and salt generously. Place the colander over a bowl and allow the cabbage to "sweat" for at least one hour or as long as overnight. Rinse and pat dry.
2. Heat a panini press to medium.
3. To make each sandwich, spread 1 teaspoon of the mustard on one slice of bread and cover with ham. Top with 6 pickle slices, followed by half the cabbage.
4. Spread mustard on the second slice of bread, lay swiss cheese over cabbage, and place second slice mustard-side down on cheese.
5. Heat in the panini maker until cabbage is just wilted and cheese is melted, about 5 minutes.
6. Cut in half and serve immediately.

Makes 2 sandwiches.