Traditional Mexican Food

You can get a good overview of the food from the Aztec peoples. Many of the dishes of the Aztec, and their diet are still familiar in Mexico today - maize (corn), beans, avacados, squash, chillies, and tomatoes. The tomatoes used today are different variety than they were before the arrival Europeans showed up. The nopal cactus has been used for food in a lot of dishes. We all know that chilli peppers make up most of traditional Mexican food. These and salt were so important to the peoples of central Mexico that special religious fasts involved avoiding them. Many of the meats eaten today were an addition from the Spanish. Much traditional Mexican food is made the same way, but with different meats. Common in the days of the empire were turkey and dogs.  At times hunters would also provide deer, rabbit, duck, and other birds.  From the sea came axolotl, a type of salamander, and acocil, a crayfish.  Acocil tacos are still eaten in Mexican restaurants. From the world of bugs, grasshoppers and the maguey worm are two creatures that were probably eaten by the Aztec peoples and are still eaten today.

http://www.aztec-history.com/traditional-mexican-food.html