The term refers to leather that has been processed using tannins derived from plant matter. These tannins, sourced from materials like tree bark, wood, leaves, and roots, interact with the proteins in the animal hide to transform it into a durable and stable material. An example is leather crafted using oak bark extract, resulting in a firm, supple product often used in saddlery and high-quality footwear.
This method of preservation is one of the oldest known to humankind, offering a natural and often more environmentally conscious alternative to chemical tanning processes. Products created through this process are often valued for their unique aging characteristics, developing a rich patina over time. The resulting material often displays a distinct aroma and a firmer texture compared to alternatives.
