Your first concern must be: "Only three ingredients?! The recipes can't taste that good." Let me assure you that the recipes are absolutely delicious, despite the fact that they contain only three ingredients. (Recipes often contain salt and pepper, which are not considered ingredients.)
However, here's the caveat: While the recipes call for only three ingredients, many of those ingredients are rare indeed. Examples: saffron threads, Thai curry oil, za'atar, pomegranate molasses, rutabaga, Asiago cheese, creme fraiche, fresh tarragon, tandoori paste, mango chutney, etc. You were probably thinking: "Only three ingredients, I'll definitely have all three ingredients in my house." Think again. Unless you have fennel seeds in your house, you can't make the roast pork recipe on page 164. So many recipes call for obscure ingredients, I felt the need to alert potential buyers.
That being disclosed, many recipes call for ingredients that you will probably have. And all the recipes I've tried so far have been delicious and easy to prepare.