Reddit mentions of 660 Curries

I recommend 660 Curries. That should keep you busy for awhile.

My favourite indian cooking book is "660 Curries" by Raghavan Iyer : http://www.amazon.com/660-Curries-Raghavan-Iyer/dp/0761148558/ref=cm_cr_pr_product_top

He was a chemist in India, and then learn "Hottellerie" and cattering in the US. He brought with him his chemist mindset to the understanding of taste, and there is a very good introduction about that in his book. Also he travelled troughout India for a long time, inviting himselfs in homes and places where he smelt something unique. He really searched for those unique recipes, and uncommon ones. I have plenty of other indian cooking books, but this is my favourite.

If you want real Indian food, go buy 660 Curries. It's a huge book, but it's amazing, and I've had it for a year now. Every recipe I try is absolutely fantastic, and he gives great tips on techniques. There's everything from how to make your own paneer to biriyanis. The focus is definitely more on curries, but also includes some flatbread recipes and other side dishes.

This is literally my curry bible.

Edit: Also included in this book are various recipes for how to make different spice blends like garam masala or punjabi masala using the whole spices. Invaluable just for that.

http://www.amazon.com/660-Curries-Raghavan-Iyer/dp/0761148558/ref=cm_cr_pr_product_top

that is the best book by far on Pakistani and Indian cooking. I live in Pakistan and I wish I had it.

and if you're interested in indian curries in particular, i've heard excellent things about 660 Curries