Production process and flavor. The main difference between black pepper powder and black pepper sea salt is their preparation process and flavor. Black pepper powder is a fine powdered form made by drying the ripe black pepper fruits in the sun and then grinding them, while black pepper sea salt is made by mixing sea salt with black pepper and then drying it in the sun. In terms of flavor, black pepper powder has a stronger flavor with a pungent and slightly spicy taste. Black pepper sea salt, on the other hand, adds the salty taste of sea salt to the black pepper for a more balanced flavor with some slightly salty characteristics.