What is the main ingredient in flour tortillas?

The main ingredient in flour tortillas is wheat flour. Flour tortillas are traditionally made using refined wheat flour, which provides the necessary gluten that gives the tortillas their characteristic elasticity and chewiness. This gluten is crucial for allowing the dough to stretch without breaking, enabling the tortillas to be rolled out thinly and cooked without falling apart.

In contrast, corn flour is primarily used to make corn tortillas, while rice flour is often used in gluten-free options. Barley flour, although it can be used in baking, is not commonly associated with tortilla production. Therefore, wheat flour is the correct answer since it is the standard ingredient for flour tortillas, crucial for achieving the right texture and flavor.