I Think it must be important to keep in mind the size of Mexico when considering authenticity- it's a BIG country. While Esparza's may serve something like Tex-Mex, which many American's are use to, coastal regions and the interior serve food close to Nueve Taqueria's style, which often is not loaded with spice, but has a more delicate palate. This is one of my favorite resturant's and only occasionally we get a server on an off day, but I beleive they are human, also authentically.
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