After opening, please be sure to refrigerate it, and try to finish it within 2-3 days.

Since the body can only absorb a limited amount of liquid at once, it's recommended to consume about a glassful in small amount, in frequent intervals. As for the recommended times, it's advisable to drink it in the morning upon waking, before meals, during commuting, after exercise, in between studying or work, before and after bathing, and before bedtime.

Yes, you can use it as cooking water. Simply replacing your usual cooking water with Kotohogi can elevate the quality of your dishes. The abundant minerals and high permeability of Kotohogi bring out the umami and flavors of ingredients, making your dishes even more delicious. It's recommended for cooking rice, making tea, and in dishes like simmered foods and soups.

Currently, we do not have physical stores. You can purchase it only through our online shop.

Currently, we offer free shipping for the ongoing first-time purchase promotion and orders of 5,000 yen or more. However, for cash on delivery orders, a handling fee of 330 yen will be charged, regardless of the product amount.