Puckha is an Indian Street Snack that is loved by most. Here's the "standard" stall that you'll find if you visit India.
Puchka is its bengali name, it's called Pani - Puri in Hindi and goes by various other different names. It's basically Semolina pockets filled with mashed spicy potatoes and lentils and dipped in a tamarind water.
Its super Tasty.