To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
I bought 4 books. This was in the top 2. I found it practical to give good recipes with some education. It didn't dive really deep but I believe I will wear out the pages and use it frequently. It was pretty basic, for a beginner it whet my appetite.