From the bloggers at Outside Our Bubble:
Well, quite simply, a Kamado is a grill/oven/smoker/barbecue that is ceramic and made in such a way that it can hold temperatures from 200 to 750+ degrees for long periods of time.
A Kamado has been around for thousands of years and in different shapes. You cook with it using all natural wood charcoal and never use any fluids to light it. You control and dial in the temperature using a venting system.
The Big Green Egg is a brand that is well known and has a large following. I believe that to be mainly because they really came out with one of the first grills and built a niche at the time and thus created a great following that continues today. They are affectionately known as EggHeads.
To read why “EggHeads” are so great for outdoor cooking, click here.