While the loose-leaf teas like gyokuro and sencha are rolled into tight twists after being steamed, the leaves used to make matcha are not rolled nor twisted. Instead, they are passed through the various stages of a large multi-chambered air machine where they are gently blown around and cooled using a mild flow of air. They are then scattered evenly over a flat surface and allowed to dry further. Before completely drying, they pass through a special drum-like machine where the veins and stem are separated from the main part of the leaf. The part that remains, after drying, is referred to as tencha. Tencha is the raw material for matcha powder.