Page 116 - Barbecue Chicken Made Easy

preventing anything from escaping.
can weighs more after the cook than before because of the fat and
juices!
Also, the can is inserted half way up the cavity and blocks the meat from contact with the beer. The can is like a condom. There is very little surface area for flavor to penetrate, just the 2 inches or so above the can in the shoulder.
If you remove the top of the can, even if the beer were to evaporate, and yes, a small amount will evaporate even at low temperatures, it would come into contact with only a small amount
The pictures also show that the