Texas is a bellwether for those who see American society entering an era of Hispanicization. According to some thinkers, as the Hispanic population increases, so does its influence on the American culture at large. To experience the evolution of Tex-Mex, from its bland beginnings in the Felix Tijerina generation to the hot and spicy version we eat today, is to experience American culture changing before your very taste buds.
When I take people to Felix or Molina's or the Original Mexican Cafe in Galveston and tell them this is an incredible opportunity to see what Tex-Mex tasted like 50 years ago, they look at me like I'm crazy. "So where do you go to get authentic Mexican food," a tablemate at Felix asked me after he tasted the beef tamales with bland chili and beans ($5.95).
It's hard for people to understand why they should want to eat old-fashioned Tex-Mex. Let me put it this way: You eat at these old Tex-Mex places for the same reason that you listen to scratchy old recordings of the Delta blues. It's not about the quality; it's about getting in touch with the roots of American culture.