Yakisugi is a Japanese process of wood preservation, the charred surface, creates a protective layer that enhances its durability. The carbonised surface is a natural barrier, shielding the wood from moisture, pests, decay, and even fire itself. The charring process also enhances the wood's dimensional stability, making it less prone to warping or cracking. Additionally, Yakisugi creates a visually striking appearance: https://en.wikipedia.org/wiki/Yakisugi