Taiwan-specific Serpentine is a rare natural dark-green mineral in the world. DESIGNBURG combined it with the stainless steel in the contemporary shape. Two materials have completely different hardness and need to be polished at the same time to pursue beauty and smooth touch. Mochi Pestle and Mortar are two chairs. {Pestle} uses the elasticity structure to show the spongy texture like mochi, a traditional food in TW, Hualien. It’s an unexpected sense of elasticity when you sit. {Mochi Mortar} is a tool shape which is making mochi. There is a space in the chair to storage your little snack.