This dish ranges in colour from mid tan to dark brown black with a hint of blue smoke, has a flattened lip, a constant curve across the surface of the dish, a shake filled with black epoxy, and a hint of warp completing the piece. Bog Oak is formed when an Oak tree dies, falls, and is submerged in iron rich water - fenland or peat bogs. The natural ebonisation process occurs when water-soluble tannins in the oak react with iron ions (Fe²⁺ / Fe³⁺) in acidic, anaerobic bog water over hundreds or thousands of years to form stable, dark iron-tannate complexes - the fabulous deep brown/near black colour. The oxygen-free nature of the bog water prevents rotting and decay of the timber. Finished in food safe mineral oil.