What is the most important source of protein in Mexico?

The most important source of protein in Mexico is beans. Beans are a staple of the Mexican diet and are used in a variety of dishes, including tacos, burritos, enchiladas, and soups. Beans are a good source of protein, fiber, and iron, and they are also relatively inexpensive. Other important sources of protein in Mexico include meat, poultry, fish, and eggs.