I know that garam masala recipe often vary family to family and region to region. I couldn't say where this one is specifically from but it comes courtesy of the fabulous Madhur Jaffrey, her World of the East Vegetarian Cooking book. This is quite heavy in cardamom, so if that's not a flavour you enjoy, this might not be the mix for you. Note that when it says cardamom seeds, that doesn't mean the pods, it means the seeds inside.