Drinking culture refers to the customs and practices associated with the consumption of alcoholic beverages. Although alcoholic beverages and social attitudes toward drinking vary around the world, nearly every civilization has independently discovered the processes of brewing beer, fermenting wine, and distilling spirits.
Alcohol and its effects have been present in societies throughout history. Drinking is documented in the Hebrew and Christian Bibles, in the Qur'an, in art history, in Greek and Roman literature as old as Homer, and in Confucius’s Analects.
"Social drinking" refers to casual drinking in a social setting without an intent to get drunk. Good news is often celebrated by a group of people having a few drinks. For example, drinks may be served to "wet the baby's head" in the celebration of a birth. Buying someone a drink is a gesture of goodwill. It may be an expression of gratitude, or it may mark the resolution of a dispute.
For the purposes of buying rounds of drinks in English public houses, William Greaves, a retired London journalist, devised a set of etiquette guidelines as a Saturday morning essay in the defunct Today newspaper. Known as Greaves' Rules, the guidelines were based upon his long experience of pubs and rounds. The rules were later re-commissioned by the Daily Telegraph and published in that newspaper on November 20, 1993. Copies of the rules soon appeared in many bars throughout the United Kingdom.
When an individual arrives at a pub, common practice invites the newcomer to unilaterally offer a drink to a companion, with the unspoken understanding that when the drink has been nearly consumed, his/her companion will reciprocate. Trust and fair play are the root of the rules, though there are occasions (such as a requirement of one of the drinkers to need to carry out more important jobs, if any can be conceived of) where the rules can be broken, and were itemised by Greaves in his article.