Bhang
Is a potent, powdered form of marijuana often mixed into "special" lassis, simply called bhang lassi. the drink is especially popular on holidays as varanasi is a major center of shiva worship as it is offered to the lord in form of prashad. it can be quite intoxicating.
Thandai
Is cool milk based drink made with pistachios, almonds and kesar and topped off with a large dollop of malai cream. bhang is often added to thicken the concoction, though it can be made without. many tandai stores are located near the main godowlia, and most also serve lassi.
Alcohol
Is available at a few restaurants and hotels, such as the radisson and taj. there are several wine shops in the old city but they don't offer any sitting arrangement. you can buy whatever you want and bring it to your hotel room.