The burgers here have a tasty backyard burger quality to them and thus rank high on my list of decent local burger joints. The half-pound bacon double cheeseburger hits the spot and the french fries are appropriately crispy and delicious.
Although they charge an extra 50 cents for your choice of dipping sauce, I highly recommend trying the chipotle barbeque sauce (especially on the fries). This sauce has an uncommon savory note that I have only been able to guess is from celery seed. Maybe other BBQ afficionados can better deduce the secret ingredient, but I stand by my assessment.
Other reviewers are right to note that the burgers are a tad pricey, but the availability of original flavors (including the soda fountain) and a real homestyle burger makes Coal Burger worth a visit.