What is a beer? What is the difference between an ale and a lager? How is cider made? What is the difference between keg and cask beer? Why should beer glasses be free from residue detergent? What is ullage? How should bottled beer be poured to prevent too much head? What is a black and tan? Use this interactive module to find out and learn more about beer and develop your confidence to answer customer questions. be inspired to carry on your learning and use the links provided. Designed for hospitality staff that want to develop their professional knowledge or for anyone who wants to develop their personal knowledge. The module ‘Prepare and Serve Drinks’ should be used alongside this module to develop all round knowledge.