Stout is dark brown (almost black) and tastes a little bitter. The most popular example is the Irish drink called Guinness. You may need to wait some time for this drink. Do not be surprised if the barman starts serving someone else before finishing pouring your drink. Lager is a lighter-coloured type of imported beer, and is normally served cold. Examples are Fosters Ice, Stella Artois or Becks.

When you order a drink, don’t just ask for a glass of beer: ask for bitter, stout or lager, or ask for a particular brand name. State if you want a pint or a half pint (if you don’t say, it will be assumed that you want a pint). A pint is about half a litre. There may be a choice between bottled beer or draught beer.Shandy is a mixture of beer and lemonade – you should ask either a lager shandy or a bitter shandy.

Alcopops are bottled drinks which may taste of lemonade but are actually alcoholic. Examples are a Smirnoff Ice or a Bacardi Breezer.

Drinks are often mixed (known as a cocktail). For example, common mixed drinks are:
Gin and tonic; Whisky and coke; Rum and coke; Vodka and orange; Vodka and tonic; Bloody Mary (this is vodka and tomato juice).

In summertime a popular drink is Pimms and lemonade. This is a traditional cocktail of either Pimms Number 1 (based on gin) or Pimms Number 6 (based on vodka) together with ice, citrus fruits (lemon/orange/lime) and lemonade/ginger ale.

source: http://www.ukstudentlife.com/Britain/Food/Pubs.htm#Introduction

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