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.
Ground white pepper is sometimes used in Chinese cooking or in dishes like salad, lightcoloured sauces or mashed potatoes, where black pepper would visibly stand out. White pepper has a slightly different flavour from black pepper due to the lack of certain compounds which are present in the outer fruit layer of the drupe but are not found in the seed.