Coffee preparation

Coffee preparation is the process of turning coffee beans into a beverage. While the particular steps vary with the type of coffee and with the raw materials, the process includes four basic steps: raw coffee beans must be roasted, the roasted coffee beans must then be ground, the ground coffee must then be mixed with hot water for a certain time (brewing), and finally the liquid coffee must be separated from the used grounds.

Roasting

Coffee roasting is heating coffee beans in a roasting machine. A good share of the coffee available in supermarkets is already ground. Coffee beans can be bought roasted by the supplier, or they can be roasted at home.

Grinding

Coffee grinding is the process of turning roasted beans into granules. While the particular steps vary with the type of coffee the process includes four basic steps: raw coffee beans must be roasted, the roasted coffee beans must then be ground, the ground coffee must then be mixed with hot water for a certain time (brewing), and finally the liquid coffee must be separated from the used grounds.

Brewing

Coffee brewing involves mixing ground coffee with hot water and the extraction of the soluble contents of coffee into the water. Soluble contents of coffee include caffeine, oils and aromatic compounds. The remaining coffee grounds are then separated from the liquid.

Serving

Once the coffee is brewed, it is served hot. Some people add milk or cream to their coffee, or sweeten it with sugar or artificial sweeteners. Others prefer to drink it black.

Health effects

Health effects of coffee have been studied and indicate that moderate coffee consumption is benign or mildly beneficial in healthy adults. However, coffee can worsen certain conditions such as insomnia, heart disease, and anxiety.

See also

• Espresso
• French press
• Coffee grinder
• Coffee roasting

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