Uchiko has the largest wax production in Japan. Traditionally, wax was sourced from the fruit of the Japanese wax tree and lacquer tree and became widely used in candles and cosmetics before being replaced by petroleum. In Uchiko candle-making, all steps are performed by hand; wood wax is rolled with bare hands while being rubbed onto the wick, then left to dry, a process known as "kigake." Only one store still preserves this manufacturing method, which is unique in its simple style, with no color or painting. The candles’ warm light is soothing to the soul.