British curry house style lamb rogan josh is quite different to authentic Indian rogan josh. I love it and I have an excellent recipe in my new cookbook "The Curry Guy". You can make British Indian restaurant style dishes at home that taste even better and cost a lot less.
Home made curry powder is a lot better than store bought. For one thing, there aren't many curry powder producers that go to the trouble of roasting their spices. This is a must-have product for anyone wanting to make British Indian restaurant (BIR) style curries at home.