In a time when a lot of restaurant stocks are causing a bout of indigestion for shareholders, Cava Group (NYSE: CAVA) offers the potential of a winning recipe. The fast-growing chain offering fresh takes on Mediterranean and Greek-inspired food is cultivating a growing fan base. It's one of the few fast-casual concepts still posting positive store-level comps, for now. That winning streak could end next week. Cava's historically positive year-over-year growth at the individual store level has been decelerat ...