Pottery › Espresso Mug Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Espresso Mug $40.00 Earthenware fired to cone 3 in a woodkiln. -Hand washing recommended. Add To Cart Added! Earthenware fired to cone 3 in a woodkiln. -Hand washing recommended.