In the old Soup Burg space at 1150 Lexington (79/80), the Burger One is now serving unbelievable tacos and tortas. Yesterday, there was a placard out front to announce the offerings, so I stopped by. I've eaten their burgers, grilled cheese and other diner staples with some pleasure and little expense in the past, but it's always frustrated me that an entirely Hispanic staff , as it is at so many lunch counters, didn't get to put a bit of home onto the griddle. Now they are, and it seems to be a roaring success with a broad economic and cultural swath of the UES, from laborers to old ladies to me. Let's be clear, the cecina, carnitas, beef and chicken tacos and tortas aren't in the Sunnyside/Woodside league, but given the desert-like conditions for cheap quick relatively authentic and undeniably tasty Mexican on the UES, this is a find. Oh, they also have a selection of Jarritos sodas, including Tamarind.