Coffee History
The coffee tree, a small evergreen of the genus Coffea, has smooth, ovate leaves and clusters of fragrant white flowers that mature into deep red fruits about 1/2 in. (1.27 cm) long.
The fruit usually contains two seeds, the coffee beans. C. arabica yields the highest-quality beans and provides the bulk of the world’s coffee, including c.80% of the coffee imported into the United States. The species is thought to be native to Ethiopia, where it was known before AD 1000. Coffee’s earliest human use may have been as a food; a ball of the crushed fruit moulded with fat was a day’s ration for certain African nomads.
Later, wine was made from the fermented husks and pulps. Coffee was known in 15th-century Arabia; from there it spread to Egypt and Turkey, overcoming religious and political opposition to become popular among Arabs. At first proscribed by Italian churchmen as a heathen’s drink, it was approved by Pope Clement VIII, and by the mid-17th cent. Coffee had reached most of Europe. Introduced in North America c.1668, coffee became a favorite American beverage after the Boston Tea Party made tea unfashionable.
Coffee owes its popularity in part to the stimulative effect of its caffeine constituent. Decaffeinated coffees, developed in the early 1900s, account for c.18% of the U.S. market. For those without the time or the inclination to brew their own, there are instant or soluble coffees, introduced in 1867, which account for c.17% of U.S. coffee sales.
Coffee plant cultivation
The coffee plant prefers the cool, moist, frost-free climate found at higher altitudes in the tropics and subtropics. Optimum growing conditions include: temperature of about 75°F (24°C); well-distributed annual rainfall of about 50 in. (127 cm) with a short dry season; and fertile, deep, well-drained soil, especially of volcanic origin.
While coffee can be grown from sea level to c.6,000 ft (1,830 m), and C. robusta is produced at low elevations in West Africa, the better arabica grades are generally produced above 1,500 ft (460 m).
Strong winds limit coffee production; coffee is often grown in the shelter of taller trees. A coffee tree yields its maximum sometime between its fifth and tenth year and may bear for about 30 years.
Preparation and types of coffee
After the outer pulp is removed, coffee seeds are prepared by roasting, which develops the aroma and flavour of their essential oils. Longer roasting produces darker, stronger coffee. The variety of recipes and prescriptions for roasting, brewing, and serving coffee reflects the diversity of consumer tastes and cultural preferences.
All techniques begin with properly roasted, freshly ground coffee; freshly boiling water; and absolutely clean utensils. Turkish coffee, a strong, unfiltered brew of finely powdered coffee and sugar, is popular in Greece, Turkey, and Arabia. Italian-style espresso, or expresso, is brewed by forcing hot water under pressure through finely powdered, often darkly roasted coffee. Most other coffees are filtered. Café au lait, coffee mixed with scalded milk, is a traditional French breakfast drink, as is café con leche in countries where Spanish is spoken.
Coffee flavoured with chicory is a speciality of New Orleans. Connoisseurs pay dearly for Mocha from the Yemen region of Arabia, Blue Mountain from Jamaica, Kona from Hawaii, or other so-called speciality coffees from Africa, Indonesia, or Latin America—all premium arabica varieties.