Which type of chili is often included as an extra on the fast food menu?

Green chilies are commonly included as an extra on fast food menus, particularly in items such as burgers, tacos, and chili dishes. Their mild heat and distinct flavor enhance the overall taste profile of a dish without overwhelming it, making them a versatile choice for customers seeking to add a bit of spice to their meals.

Poblano chilies, while flavorful, are less frequently seen as a standard menu extra due to their larger size and different flavor profile. Jalapeño peppers, on the other hand, are also popular but are often served fresh or pickled rather than as a typical extra. Red chilies may be used in certain dishes but are less likely to be offered as a general topping option. The prevalence of green chilies as a standard additional option makes them the most suitable choice for this context.