White pepper is made from fully ripened pepper berries. They are soaked in water for about 10 days, leading to fermentation. Then, their skins are removed, which also removes some of the hot piperine compound, as well as volatile oils and compounds, which gives black pepper it's aroma. As a result, white pepper has a different flavour and heat component than black pepper. The process used and application of white pepper can also introduce different flavour notes.