The products of ASAHI CO.,LTD have plating inside, and outside is finished with polishing to optimize materials.
As no baking finish is provided, the products will naturally oxidize and discolor over time.
Use the attached abrasive to polish the pan in case of discoloration.
Frequent care will enable long-term use as copper is a very durable material.
Wash the pan and boil the water in it before first use. This is to remove unwanted smell or oil that are unavoidable in manufacturing process. Wash the inside with neutral detergent and boil the water (with vegetable scraps is better).
When the cooper pan oxidize and discolor over time, the same as silver ones, polish it with the attached abrasive.
Copper kitchen tools will turn slightly black or get dark with soot when heated.
Soot on the outside can be removed if wiped with a soft cloth or sponge and the attached abrasive.
The inside of copper products (pots, kettles, pans, mugs, etc.) are coated with plating.
Plating coating will come off over time。However, it is not harmful, and the copper ion effect even increases.
For washing, use a soft sponge. After washing, wipe off the water thoroughly and store the pan in a dry location.
Do not leave food in the pan for a long time after cooking.
Remove the food as soon as possible after cooking; otherwise, it may cause patina or abrasion of plating.
Be assured that patina is not harmful.
Patina is a kind of rust that grows on the surface of copper. It is an insoluble compound and isn't absorbed in human body. In case it is, it will be safely discharged.
If you have anemia even though you take sufficient iron, the symptom might be copper deficiency anemia.
Copper helps in iron circulation. The deficiency of copper will affect the growth of brain, nerve and bone.
For this reason, copper is a must for out health and essential metal for humans.
To produce blood and maintain good health, you need to take copper from daily meals.
Recommended intake for adults is 2 to 5 mg a day on average.
By using cooper kitchenware, you can take necessary nutrients without extra efforts and discharge naturally.
Copper provides a bactericidal effect when mixed with water, which is called "copper ion effect".
copper ion effect prevents bacteria and keeps copper ware clean.
Copper has a few times higher heat conductivity than other metals.
Copper ware can conduct heat evenly and cook ingredients well without overcooking.
Especially when cooking Japanese Oden, beans, stew or lump of meat, cooper pans can make the ingredients soft and well-cooked with good heat circulation.
With a copper pan which has high conductivity and heat retention, you can cook over middle heat or less. This leads to energy saving. Also, cooper is a lasting economical material if provided with good care.