As for those other burgers, we found we liked building our own — start with the Plain & Simple Burger ($8), which comes with lettuce, tomato and mayo, and choose from a big selection of toppings ...

If you want to add another layer of flavor, put those peppers into a simple sauce. "Whip up a quick chipotle mayo by blending chipotle peppers with mayonnaise, a squeeze of lime, and a pinch of ...