Hey there!
My boss was in a bar over the weekend and had a pint of guinness - after the bartender poured the pint, she set it in some type of contraption that was bolted to the bat that resembled a cup holder that she poured about an inch of water into. Somehow this made the guinness head increase. Of course the gal had no idea what it was or why she was serving beer that way, she was just doing as she was told.
Have any of you ever seen anything like this?? How would this even work?



