An alcoholic beverage is a drink containing ethanol (commonly called alcohol). Alcoholic beverages are divided into three general classes: beers, wines, cocktails or spirits. Alcoholic beverages are consumed in most countries of the world. Each nation has laws that regulate their production, sale, and consumption. In particular, such laws specify the minimum age at which a person may legally buy or drink them. This minimum age varies between 16 and 25 years, depending upon the nation and the type of drink. Most nations set it at 18 years of age. The production and consumption of alcohol occurs in most cultures of the world, from hunter-gatherer peoples to nation-states. Alcoholic beverages are often an important part of social events in these cultures. In many cultures, drinking plays a significant role in social interaction, mainly because of alcohol’s neurological effects. Alcohol is a psychoactive drug that has a depressant effect. A high blood alcohol content is usually considered to be legal drunkenness because it reduces attention and slows reaction speed. Alcoholic beverages can be addictive, and the state of addiction to alcohol is known as alcoholism. Ref: http://en.wikipedia.org/wiki/Alcoholic_drink

Coffee is a brewed drink prepared from roasted seeds, commonly called coffee beans, of the coffee plant. They are seeds of coffee cherries that grow on trees in over 70 countries. Green (unroasted) coffee is one of the most traded agricultural commodities in the world. Due to its caffeine content, coffee can have a stimulating effect in humans. Today, coffee is one of the most popular beverages worldwide. Ref: http://en.wikipedia.org/wiki/Coffee

Tea is the agricultural product of the leaves, leaf buds, and internodes of the Camellia sinensis plant, prepared and cured by various methods. “Tea” also refers to the aromatic beverage prepared from the cured leaves by combination with hot or boiling water,and is the common name for the Camellia sinensis plant itself. Although tea contains various types of polyphenols, “contrary to widespread belief, tea does not contain tannic acid.”  After water, tea is the most widely-consumed beverage in the world. It has a cooling, slightly bitter, astringent flavour which many enjoy. There are at least six varieties of tea: white, yellow, green, oolong, black and pu-erh of which the most commonly found on the market are white, green, oolong and black. All teas are made from the same species of plant, though different varieties may be used, and the leaves are processed differently, and, in the case of fine white tea, grown differently. Pu-erh tea, a post-fermented tea, is also often used medicinally. Ref: http://en.wikipedia.org/wiki/Tea