These coconut macaroons are so easy to make with only 5 ingredients! They're zesty and limey, not to mention a delicious way to use up leftover egg whites. Preheat the oven to 180C/160C Fan/Gas 4.

The first macaroon I ever had was from a little bakery on Catalina Island, which sits about 29 miles off the coast of Long Beach in Southern California. It was about the circumference of a kiwi ...