I am assuming you mean the powder used to make biryani and not the curry. They do sell some indian groceries and should have biryani masala. However if you want more options I would suggest you to visit other indian grocers like Krishna, Radha or Vego. And yes they do have a nice restaurant serving vegetarian indian delicacies.
I highly recommend you go by and check them out. Their food is delicious!
I don't know what that is but I would guess yes. They have a very extensive menu full of Indian dishes.
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