As much as I hate to say it, this isn't a groundbreaking cookbook. IF you are new to using a pressure cooker, it is a great wait to get your feet wet. Most of the recipes aren't too difficult and including many recipes that are similar to other recipes from American Test Kitchen. As a cookbook that came with my Zavor cooker, I don't think it was bad for free but it isn't something I would purchase on my own. I will maybe use 20 recipes, tops out of the entire cookbook.
Why the three stars? Well, it isn't a bad cookbook, it just isn't the quality I would expect from American Test Kitchen. The pictures even a bit rushed but gives you an idea of the recipes. Just don't expect to find much you wouldn't find online for free or on Pinterest.