The context#cookieMap method returns a map with all the request cookie keys and values.Steps to create a new Maven project 'javalin-read-request-cookies-as-map' and update the pom.xml with the necessary dependencies.Includes the definition of JsonUtil class and main application class (App.java) with code snippets.Demonstrates how to build and run the application, along with testing the API to read request cookies as a map.