Five Guys Burgers and Fries is a hamburger franchise that uses only peanut oil and offers trans fat-free menu items. It serves hamburgers, cheeseburgers and bacon burgers with toppings like onions, mayo, tomato and lettuce, as well as mini burgers, kosher-style hot dogs, veggie and grilled cheese sandwiches, russet-style fries, Cajun fries and soft drinks. Shelled peanuts are there for the munching while you wait for your order (which you can also do online).