El Barzón offers a variety of excellent house-made moles (MO-lays), a sauce made with chocolate that is unusually rich and fruity. The menu includes a local rarity known as pipian, a pale green sauce with an unusual nutty taste. The sauces are served over boiled chicken. The taco offerings — $1.25 for a double-wrapped corn tortilla, $2.25 for flour — also include tripe, tongue and barbecued goat alongside the more familiar offerings. Terrific soups and moles of all kinds, exceptionally friendly wait staff. No liquor license as of December 2006. Open seven days for lunch and dinner.