What is the common ingredient in both the teriyaki chicken rice bowl and the mini crispy chicken sandwiches?

The correct choice is soy, which is a key ingredient in both the teriyaki chicken rice bowl and the mini crispy chicken sandwiches. In the teriyaki chicken rice bowl, soy sauce is a fundamental component of the teriyaki glaze that adds savory flavor and depth to the dish. Similarly, soy is often present in sauces or marinades used in dishes like crispy chicken, where it contributes to the overall flavor profile and enhances the taste of the chicken.

The other ingredients listed—mustard, dairy, and sulphites—are not typically associated with these particular dishes. Mustard is a condiment that doesn't play a role in either of the dishes mentioned. Dairy is not a common ingredient in either dish, as they focus more on savory and umami flavors rather than creamy elements. Lastly, while sulphites can be used in food preservation, they are not a prominent or common ingredient in teriyaki sauce or the preparation of the chicken in these specific offerings. Therefore, recognizing soy as the shared ingredient provides insight into the flavor elements of both menu items.