Roast beef
Fresh baby spinach
Cheddar cheese slices cut on the diagonal
Sauce:
3/4 cup good mayonnaise
1 1/2 tablespoons Dijon mustard
1 tablespoon whole-grain mustard
1/2 tablespoon prepared horseradish
2 tablespoons sour cream
Kosher salt
Assemble the sandwiches by cutting open bread and slathering it generously with sauce. Add cheese, beef and finally spinach. Close bread and slice. Serve cold.











