Known as the most expensive metal after gold and silver, tin is very malleable and flexible. Though having nearly the whiteness of silver, it does not rust easily nor will air tarnish it readily. It is significantly antibacterial, and also known as a material with low allergic reactivity and high heat conductivity. Because it is known to absorb impurities and purify water, tin wares allow you to enjoy liquor, meals, sweets, or flowers. It has been believed that water in a tin container does not spoil, and tin removes excessive bitterness from sake and produces better taste. Tin ware cooled in a refrigerator for 2-3 minutes will also keep the dish fresh and cold.