Rubbing Lacquer is a technique in which raw lacquer is rubbed many times into wooden bases. By repeating rubbing and drying, a beautiful luster appears.Beautiful wood grain wine cup made of hollowed-out horse chestnut surfaced with rubbing lacquer.The pattern created by nature is one and only.The size is approximate. Do not use in a dishwasher, microwave, oven, etc. Do not expose to direct fire. Do not use a scrubbing brush or abrasive. You can use a neutral detergent.