My friend and I went awhile back to Potbelly's Sandwich shop. When we arrived we were welcomed by the man and woman working there. The lady explained how it worked.. you simply pick your sandwich and then whatever condiments you want on it. Potbelly is like a very fancy and more delicious subway. They also make their own brownie cookies and malt shakes. I really enjoyed my Chicken/cheddar sandwhich, my friend got the tuna and she said it was very good. We have returned 3 times since then. It is a little spendy but well worth it. My 6 in and shake was about $10.