Pepper White Ground

Black and white, yin and yang.
 
Black pepper and White are the same, in that they come from the same vine, of the same plant. Where they differ, is what makes white pepper so much different. 
 
Once collected, they are soaked in water for some time in order to remove the black outer casing. Which leaves white pepper tasting slightly milder than its black counterpart. But though the flavor is milder, this is not to say white pepper cannot hold its own. 
 
With a more noticable heat and pungency, white pepper is far more popular in Europe. Southeast Asian, and European kitchens often favor white pepper over black.