Tonight I made the "Pork Curry" from this book. I wasn't too impressed with it to be honest. The overall impression was that it was underspiced and a bit of a waste of pork, as it was a lot of meat and not so much sauce. I interpreted the spoon measurements to be heaped rather than level, but even with this interpretation the final dish was fairly bland.
The sauce which did remain after 50 mins of simmering quickly separated on the plate, with the water being sucked into the rice and a dry paste remaining.
Of course the book isn't BIR and doesn't claim to be, but I was hoping it was going to be a useful source of traditional style recipes. I think I'll stick to BIR.