This man obviously cannot be trusted, as he used the words “too,” “much,” and “beer” in the same scentence. 
I believe he could not tell the difference between beer and water. He used Budweiser! As Monty Python put it, " American beer is like making love in a canoe - It’s f***ing close to water."
I’m looking for something to impress the cubs on camp at the end of the month, which is why we’ll only have the camp fire to use.
I think an inverted billy can over the chicken would work to retain the heat.
Although I’m normally a paid-up “free range only” chap when it comes to chicken, I might well try with a couple of Asda’s £2.50 birds while I experiment. 
People, the correct reply to this post is the Achewood Beer Can Chicken Recipe