Takagi Metal Iron Egg for Pickling, Coloring, and Iron Supplementation, Nukazuke, Made in Japan, Nambu Tekki Iron Egg NZ-TN For iron supplementation! For coloring pickles! Iron egg and rice scoop for easy iron supplementation. Iron dissolves from the iron rice scoop, and just by putting it in nukazuke, you can supplement iron. The center is indented, so you can also scoop up water from the nukazuke. Also for coloring pickles and adding shine to black beans. The ingredients of the cast iron material are completely harmless even if they enter the body. If you are concerned about rust, wash with a scrubbing brush. Size: 70 x 48 x 25mm Material: Iron, Nambu cast iron Made in Japan