It's usually a good indicator if everyone behind the counter making your food is wearing a sari.  This is a very good, authentic indian food place.  I also like that it's a walk up counter (so you don't have to tip the waitstaff).   They have tables there but I usually get my order to go during lunch and it's always pretty fast.  I like the Dal with garlic nan or butter chicken.  It's nose running spicy but it fills me up and warms my soul..aaaaah.