This is a versatile pan, a representative work of Morioka Seieido (Oigen). It's a small, palm-sized, all-purpose pan. The lid also functions as a grill pan. I've used it twice for fried eggs and stir-fried vegetables. Before listing, I boiled it and cleaned it as thoroughly as possible with a neutral detergent and a scrubbing brush. Please re-season it for yourself. Inner diameter of the pan: 15 cm, depth: 4 cm