Sambhar tastes like Udupi's

I have been preparing sambhar from many sambhar powders- Eastern, Madras sambhar, Everest, Ramdev, powder brought from the mills of south, home-made masala. All make very good sambhar, but the sambhar made from the MDH sambhar powder tastes just like the sambhar of Krishnasagar or the chain of Udupi restaurants. Arhar or Toor dal alongwith vegetables and the right amount of tamarind gives me the similar taste.