Tex-Mex basically equals queso, really. My brother spent two years in Mexico City and said he never once saw chips, queso, or salsa. Not once! I remember growing up we had this one babysitter in particular who would chop up all of my parents' expensive cheddar cheese, melt it, throw some salsa in there, and eat it with chips. I thought it was absolutely heavenly. Forbidden, guilty, heaven. Except the bowl of oily, clumpy, stringy melted cheddar cheese looked nothing like what you get . . .