page_title: Black pepper
section_title: Plants
hierarchical_section_title: Black pepper / Plants
caption_attribution_description: English: Unripe drupes of en:Piper nigrum in November at Trivandrum, Kerala, India. Black pepper is produced from these unripe drupes. The drupes are cooked briefly in hot water. The heat ruptures cell walls in the pepper, speeding the work of browning enzymes during drying. The drupes are dried for several days, during which the pepper around the seed shrinks and darkens into a thin, wrinkled black layer. Once dried, the spice is called black peppercorn. White pepper consists of the seed of the pepper plant alone, with the darker coloured skin of the pepper fruit removed. This is usually accomplished by a process known as retting, where fully ripe red pepper berries are soaked in water for about a week, during which the flesh of the pepper softens and decomposes. Rubbing then removes what remains of the fruit, and the naked seed is dried.
context_page_description: Black pepper is a flowering vine in the family Piperaceae, cultivated for its fruit, known as a peppercorn, which is usually dried and used as a spice and seasoning. When fresh and fully mature, the fruit is about 5 mm in diameter and dark red, and contains a single seed, like all drupes. Peppercorns and the ground pepper derived from them may be described simply as pepper, or more precisely as black pepper, green pepper, or white pepper.
  Black pepper is native to present-day Kerala in South India, and is extensively cultivated there and elsewhere in tropical regions. Vietnam is the world's largest producer and exporter of pepper, producing 34% of the world's crop, as of 2013.
  Ground, dried and cooked peppercorns have been used since antiquity, both for flavour and as a traditional medicine. Black pepper is the world's most traded spice, and is one of the most common spices added to cuisines around the world. Its spiciness is due to the chemical compound piperine, which is a different kind of spicy from the capsaicin characteristic of chili peppers. It is ubiquitous in the modern world as a seasoning, and is often paired with salt and available on dining tables in shakers or mills.
context_section_description: The pepper plant is a perennial woody vine growing up to 4 m (13 ft) in height on supporting trees, poles, or trellises. It is a spreading vine, rooting readily where trailing stems touch the ground. The leaves are alternate, entire, 5 to 10 cm (2.0 to 3.9 in) long and 3 to 6 cm (1.2 to 2.4 in) across. The flowers are small, produced on pendulous spikes 4 to 8 cm (1.6 to 3.1 in) long at the leaf nodes, the spikes lengthening up to 7 to 15 cm (2.8 to 5.9 in) as the fruit matures. 
  Pepper can be grown in soil that is neither too dry nor susceptible to flooding, moist, well-drained and rich in organic matter (the vines do not do too well over an altitude of 900 m (3,000 ft) above sea level). The plants are propagated by cuttings about 40 to 50 cm (16 to 20 in) long, tied up to neighbouring trees or climbing frames at distances of about 2 m (6 ft 7 in) apart; trees with rough bark are favoured over those with smooth bark, as the pepper plants climb rough bark more readily. Competing plants are cleared away, leaving only sufficient trees to provide shade and permit free ventilation. The roots are covered in leaf mulch and manure, and the shoots are trimmed twice a year. On dry soils, the young plants require watering every other day during the dry season for the first three years. The plants bear fruit from the fourth or fifth year, and then typically for seven years. The cuttings are usually cultivars, selected both for yield and quality of fruit.
  A single stem bears 20 to 30 fruiting spikes. The harvest begins as soon as one or two fruits at the base of the spikes begin to turn red, and before the fruit is fully mature, and still hard; if allowed to ripen completely, the fruit lose pungency, and ultimately fall off and are lost. The spikes are collected and spread out to dry in the sun, then the peppercorns are stripped off the spikes.
  Black pepper is native either to Southeast Asia or South Asia. Within the genus Piper, it is most closely related to other Asian species such as P. caninum.
  Wild pepper grows in the Western Ghats region of India. Into the 19th century, the forests contained expansive wild pepper vines, as recorded by the Scottish physician Francis Buchanan (also a botanist and geographer) in his book A journey from Madras through the countries of Mysore, Canara and Malabar (Volume III). However, deforestation resulted in wild pepper growing in more limited forest patches from Goa to Kerala, with the wild source gradually decreasing as the quality and yield of the cultivated variety improved. No successful grafting of commercial pepper on wild pepper has been achieved to date.
caption: Unripe drupes of P. nigrum (termed "green pepper") at Trivandrum, Kerala, India
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