According to yixing.com, cleaning your pot is a far simpler task than seasoning it. To clean your teapot, simply empty the leaves and rinse the teapot with hot water. The natural properties of the Yixing teapot will absorb the flavor of your tea, so washing it with soap will counteract the flavor-retaining properties that make Yixing teapots so unique and appealing. Never wash your Yixing teapots with any detergents or cleaning agents – save those for your laundry and countertops.
P.S. If tea stains build up on your teapot, don’t fret – collectors of these pots are always on the lookout for stains as they indicate rarity and age – the more tea stains, the more the teapot is worth!