Germany's Kaltenberg - now available in fine Delhi booze shops at Rs. 40 per 650 ml bottle - has edged out Kingfisher 330 ml as the cheapest best beer on the market in Delhi. (See earlier post for discussion of mystery of why chhota Kingfisher tastes better than the big bottles).
If you can't find it in your liquor shop, the outfit in GKII M block stocks Kaltenberg. Why do I like it so much? No weird honey flavor like the preservative-laced Castle, Kingfisher and Foster's big bottles, without the inconvenience of having to open all those tiny 12 ouncers.