This is the title of a cooking book. I call it that rather than a cook book because close to half of it is about how those four things affect the flavors and textures of food. The other half is recipes. Netflix has a series by the same name where the author travels around the world and talks with people relating to those four things. In season 1 episode 3 about acid she goes to Mexico and talks to beekeepers. They are keeping stingless bees and they talk about their Mayan heritage and how they keep their bees pretty much the same way as centuries ago. They harvest and taste different honeys.