As usual, I can't vouch for any meat items but I'm happy to be an intrepid reporter on behalf of my fellow veggie burger hunters, especially those who want that classic homestyle flav with no "weird stuff". These ones are what you hope for - big, juicy, flavourful (especially when ordered with the works), perfectly charred and on a fluffy bun. Will most definitely eat again. And again. With fries next time.
I also had the Shack's take on a fish burger on one of their apparently famed kaiser rolls. The fish is the kind with the deep-fried smooth golden shell (à la fish-and-chips). I usually prefer breaded fillets but, with a mouthful of pickles and mayo and kaiser, I had no complaints. Delish.
I was pleasantly surprised that such an old school joint had these options, and at less than $20 for two veg and one fish, it was well worth it. Call ahead and pick up if you want; the inside of your car and the inside of this restaurant are probably on par in terms of decor.