While it does have techniques, there aren't that many. Most of them are things like braising, which are covered in many other cookbooks and not really revelatory tips.
For example, the process of braising is a common cooking method that is well-known and can be found in numerous culinary resources. It involves slowly cooking food in a small amount of liquid over low heat. This technique helps to tenderize tough cuts of meat and infuse them with flavor.
However, in this particular cookbook, the coverage of braising and other techniques may not offer anything new or unique. It might not provide any revolutionary insights or tips that would set it apart from other cookbooks on the market.
As a result, for those who are already familiar with basic cooking techniques and have a collection of cookbooks, this particular one may not be a must-have. It may not offer enough value or novelty to justify adding it to their collection.