Which dish is a traditional Mexican dish often made with corn flour?

The traditional Mexican dish often made with corn flour is the tortilla. Tortillas serve as a staple in Mexican cuisine and are essential for a variety of dishes, including tacos, enchiladas, and quesadillas. They can be made from masa harina, which is a type of corn flour, and can also be prepared with wheat flour. This versatility allows tortillas to be an important element in many meals, forming the base upon which various ingredients and fillings are wrapped or layered.

In contrast, the other dishes listed do not primarily rely on corn flour. Gumbo is a Creole dish from Louisiana, typically made with a roux and served over rice. Firehouse chili is generally a bean and meat stew, often with spices and tomatoes, with no traditional connection to corn flour. Lastly, red beans and rice is a classic dish from Louisiana, known for combining kidney beans with rice; again, it does not involve corn flour as a primary ingredient. Thus, tortillas stand out as uniquely tied to Mexican culinary traditions involving corn flour.