White pepper grows in tropical Asian countries. Black pepper and white pepper both come from the same plant. But they are prepared differently. Black pepper is made by cooking the dried unripe fruit. White pepper is made by cooking and drying the ripe seeds.
People take white pepper by mouth to treat upset stomach, diarrhea, and many other conditions, but there is no good scientific evidence to support these uses.
White pepper is added to foods and drinks to add flavor.
There are a number of reasons you might choose to use white pepper over black pepper. If you want to get the flavor without the heat or color of black pepper, you’ll want to use white pepper.
For example, you might choose to use white pepper in creamy soups or chowders in order to hide the appearance of pepper specks. Because of the widespread popularity of white pepper in Asian cuisine (pepper originates from India, but Vietnam is the top pepper producer today), many will associate its flavor with that of Chinese soups, marinades, and even stir fries.