Flipside's brand new menu showcases thousands of different burger combinations, allowing diners to mix and match six different proteins with high-end ingredients including avocado and bacon, as well as creative sauces such as sweet relish and tarragon mayo. Farm-fresh sirloin patties anchor a dozen specialty burgers, including a Fat Daddy Reuben spackled in sauerkraut and onion rings. Slow-cooked pulled-pork sandwiches provide a sauce-smothered alternative to Flipside's signature creations, as do herbivore-friendly salads that may be repackaged in a whole-wheat wrap. Sudsy drafts caterwaul from a dulcet quartet of foam-flecked taps, spurring choreographed pours and surprise visits from Spuds McKenzie behind a triangular bar, where mixologists concoct specialty martinis and margaritas.