Jose,
Dakshin has two restaurants, one kosher and one not. The non-kosher one will be closing.
The kosher one is at 1154 First Avenue between 63rd & 64th Streets, Tel: (212) 355-4600, Fax: (212) 355-4614. It is under OK supervision.
While it is a meat restaurant its vegetarian entrees are also outstanding — and very inexpensive, only slightly more expensive than the many kosher dairy Indian restaurants in Manhattan that are open on Shabat (owned by non-Jews). (The mashgiach tamidi needed in a meat restaurant does cost!)