Mr. Asimov has outed the bodega dining phenom. An addendum about Tehuitzingo that he (and I, previously) neglected to mention: I have discovered over the past few months that the especiales served here (there are usually two or three a day and I have yet to encounter a repetition) are reliably delicious. Often there is a deep and flavorful caldo (soup) and there is almost always some unfamiliar, bony, but delicious cut of meat (espinazo, espaldilla, costillita) braised until meltingly tender in a tangy, flavorful adobo served with excellent arroz a la mexicana (rice) and frijoles de olla (beans). If your Spanish is weak fear not, the owner or his son both speak English. They can usally be found presiding over the refrigerated case at the front of the store (containing, limes, nopales, crema, queso molido, chorizo, guajes, jalapenos, carne asada, etc). Ask 'em about the specials. You won't be sorry.
TEHUITZINGO DELI AND GROCERY 695 10th Avenue, near 47th Street