Can I make the slaw ahead of time?
Yes. Prepare the slaw up to 2 hours before serving and store it in an airtight container in the refrigerator. Add it to the sandwich just before broiling to prevent the bun from becoming soggy.
What type of cheese works best on this sandwich?
Provolone or mozzarella are traditional choices for Italian subs. Both melt evenly under the broiler and complement the cured meats and tangy slaw.
How do I prevent the slaw from making the bread soggy?
Assemble the sandwich with meat and cheese first, broil to melt the cheese, then top with the slaw immediately before serving.
Can I use a different vinegar instead of red wine vinegar?
Yes. White wine vinegar or apple cider vinegar work as substitutes, though red wine vinegar's mild flavor pairs best with the creamy mayo and banana peppers.
Should I remove the banana peppers' seeds?
It's optional. Removing seeds reduces heat and excess moisture; leaving them adds more pepper flavor and texture to the slaw.