The general practise throughout the world has been to hand-pick the fruit; although in some countries the cherries are allowed to become fully ripe on the trees, and to fall to the ground. The introduction of the wet method of preparation, indeed, has made it largely unnecessary to hand-pick crops; and the tendency seems to be away from this practise on the larger plantations. If the berries are gathered promptly after dropping, the beans are not injured, and the cost of harvesting is reduced.
The picking season is a busy time on a large plantation. All hands join in the work—men, women and children; for it must be rushed. Over-ripe berries shrink and dry up. The pickers, with baskets slung over their shoulders, walk between the rows, stripping the berries from the trees, using ladders to reach the topmost branches, and sometimes even taking immature fruit in their haste to expedite the work. About thirty pounds is considered a fair day's work under good conditions. As the baskets are filled, they are emptied at a "station" in that particular unit of the plantation; or, in some cases, directly into wagons that keep pace with the pickers. The coffee is freed as much as possible of sticks, leaves, etc., and is then conveyed to the preparation grounds.
A space of several acres is needed for the various preparation processes on the larger plantations; the plant including concrete-surfaced drying grounds, large fermentation tanks, washing vats, mills, warehouses, stables, and even machine shops. In Mexico this place is known as the beneficio.
Washed and Unwashed Coffee
Where water is plenty, the ripe coffee cherries are fed by a stream of water into a pulping machine which breaks the outer skins, permitting the pulpy matter enveloping the beans to be loosened and carried away in further washings. It is this wet separation of the sticky pulp from the beans, instead of allowing it to dry on them, to be removed later with the parchment in the hulling operation, that makes the distinction between washed and unwashed coffees. Where water is scarce the coffees are unwashed.
Either method being well done, does washing improve the strength and flavor? Opinions differ. The soil, altitude, climatic influences, and cultivation methods of a country give its coffee certain distinctive drinking qualities. Washing immensely improves the appearance of the bean; it also reduces curing costs. Generally speaking, washed coffees will always command a premium over coffees dried in the pulp.
Costa Rica Vertical Coffee Washer