Which type of bread is used in the Frisco Sandwich?

The Frisco Sandwich is traditionally made using sourdough bread. Sourdough is known for its distinct tangy flavor and chewy texture, which complements the fillings of the sandwich well. This type of bread is often grilled, adding a crispy exterior that enhances the overall experience of the sandwich. The unique characteristics of sourdough make it a classic choice for this preparation, setting it apart from other types of bread like multigrain, white, or brioche, which do not share the same flavor profile or texture suited for the Frisco Sandwich.