The order in which you build a sandwich is very important. We call it “sandwich mechanics.” When done properly, it keeps each bite as close to perfect as possible. The wrong build can not only leave out flavors intended to be enjoyed together, it can also make a huge mess. For the banana peppers: Cooling the pickling liquid is essential to having crisp pickled peppers. If the liquid is too hot it will soften the peppers and make them mushy.