Twin grinds salt and pepper simultaneously. This allows you to add a special seasoning to your food in the kitchen or at the dining table without needing a second mill. It's not just that Twin can grind salt and pepper at the same time – a slight twist of the colored silicone strip at the top switches between the two compartments inside. You can either grind salt or pepper. The silicone strip provides a stable and secure grip for handling. The Twin salt and pepper mill features a powerful ceramic grinding mechanism that ensures easy use of the mill. Additionally, the transparent outer walls allow you to see when the contents of the mill are running low. The shape of Twin has been ergonomically designed by Bodum to make it as comfortable as possible for your hand to use the mill.