I believe you can always learn something from a cookbook, but there are some out there that are designed to really teach you something or be an authority on a particular topic, cooking style, region etc.
I love cookbooks that add to my knowledge on a particular area of cooking, or those I can use to refer back to when I need help with a particular technique or flavour pairing. Below is a list of some I find most useful.
What would you add to the list?
The Flavour Thesaurus and Lateral Cooking by Niki Segnit - Niki's books are the product of immense amounts of research and are so useful to have. The Flavour Thesaurus uses a flavour wheel to categorise different ingredients and then shows what combinations work and why. Lateral Cooking shows the links between cooking techniques and uses research from other cookbooks to explain how modifications can be made. There is a great interview with Niki on the Honey and Co Podcast where she explains the premise and work behind each book really well. These two books are probably the most used of my cooking reference books, they are filled with the answers to my questions and Lateral Cooking in particular is super useful for basic recipes and adapting recipes.
Salt Fat Acid Heat by Samin Nosrat - This list wouldn't be complete without Samin's super popular book! Samin shows us how salt, fat, acid and heat are the four main elements of cooking. This is a really worthwhile book to have, and there are some great interviews with Samin where she discusses her book on Radio Cherry Bombe and the Honey and Co Podcast.
I also really love books like Citrus by Catherine Phipps, where one category of ingredient is the theme of the whole book. In Citrus, Catherine gives information about well and lesser known citrus and a whole variety of recipes in which they can be used. These types of books are great if you want to know more about a particular ingredient or often have an abundance of that ingredient.
Books such as Pasta by Antonio Carluccio and Patisserie by Dupius and Cazor are great for getting an in depth look at a particular cooking technique or style. I love Antonio Carluccio's book Pasta, as it has some great tips for making pasta, different recipes and accompaniments for the pasta you've made. Books like Patisserie are great when you want to perfect skills that you may not use regularly in the kitchen. Both books have great step by step photos, and Patisserie has excellent illustrations of each dessert showing the layers and elements of each.
Finally, I love books such as Gastronomy of Italy by Anne Del Conte, Maggie's Harvest by Maggie Beer and How to Eat by Nigella Lawson as they are the kind of book you can use as a thesaurus to explain how to use particular ingredient or cook a particular type of dish. None of these books have many photos as they are heavy on useful information and I often use them when I have come across a particular ingredient and need some ideas as to how to cook it. I have found Maggie’s Harvest particularly useful when I am searching for ideas on how to cook a slightly less common ingredient such as duck eggs or zucchini flowers and Nigella’s book is really useful for those simple yet endlessly useful recipes like homemade stocks.