«It is an easy training aid for your bar staff. From their first night
they will be able to use Cyclops® to talk to your customers about your
ale range in confidence. There are a number of curious drinkers out
there who can be persuaded to purchase more cask beer by your staff.»

http://www.cyclopsbeer.co.uk/

Looks a reasonable idea. I saw it in What's Brewing, the CAMRA paper.