shop › Ash glazed latte cup Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 Ash glazed latte cup $50.00 Stoneware with soft ash glaze. Woodfired to 1,280 degrees in the catenary arch kiln for 30 hours. Add To Cart Added! Stoneware with soft ash glaze. Woodfired to 1,280 degrees in the catenary arch kiln for 30 hours.