What indicates that a dish has been modified when it is in the window?

The indication that a dish has been modified when it is in the window is signified by the use of a 6" Bamboo Skewer. This practice is implemented as a visual cue for the kitchen staff that the dish has had changes made to it after the original preparation. The skewer serves a dual purpose: it stands out, alerting the staff and servers to pay attention to the dish's specific modifications, and it helps maintain the integrity and presentation of the dish.

Other options are less commonly used or effective as indicators of modifications. A red tag might denote a more general status but does not specifically signify modifications to a dish in the context of service. A note attached to the dish can provide details but may not be as easily recognizable at a glance compared to the visual impact of a skewer. A special plate could indicate a different type of serving but does not communicate modifications clearly. Thus, the 6" Bamboo Skewer is the most effective symbol to convey that a dish has undergone changes, ensuring clear communication in the fast-paced environment of a restaurant.