My first stop was my collection of cookery books. I soon discovered that although each book had a recipe for Tom Kha Gai they were quite different from each other. From my memory of eating this dish I decided to use the recipe from "Thailand The Beautiful Cookbook". I made a list of the ingredients before setting off to the supermarket. I needed: coconut milk, galangal, lemon grass, kaffir lime leaves, lime juice, coriander leaves and some chili. They wanted green but I wanted red.