About Seasoning earthenware

Ceramic is not as strong as porcelain or semi-porcelain, and its high water absorbency makes it susceptible to staining and, in rare cases, water leakage.
We recommend that material number 1 be sealed before use.
Material No. 9 should be treated by cooking porridge before use.
*Sealing reduces the absorption of cooking ingredients and stains. However, it does not prevent them from being absorbed completely.

About Microwave Safe

A microwave oven heats or cooks food very quickly using short electromagnetic waves, namely, microwaves. In most cases, the microwaves heat the water content of the food. However, in some cases, the microwaves concentrate on the carbonized (burnt) parts of the food, causing the temperature to rise higher than the other parts. For example, the microwaves concentrated on the carbonized (burnt) parts of stir-fried vegetables can create a large temperature difference in /on the tableware item, which may cause breakage. In addition to water content, oil content is also heated. The oil has a higher boiling point than the water, so it heats up at a higher temperature, creating a very large temperature difference between the parts that contain oil and the parts that do not, which can cause breakage.

・Never soak hot tableware in water or place it on the cold kitchen counter. Avoid rapidly heating frozen foods or putting [the cold tableware just taken out of the refrigerator] in the microwave. A rapid change in temperature will lead to “crazing” (chaps) or breakage.

※The products with gold or silver paintings, or applied with particular glazes are not microwave safe. We put a “Do Not Microwave” sticker on those items, so please confirm it.

※Accessories etc., made of other materials are excluded from microwave safe items.

Notes on the use of Ovens

・Wipe water on the surface of tableware before putting it in the oven. Never soak hot tableware in water or place it on the cold kitchen counter. Avoid rapidly heating frozen foods or putting [the cold tableware just taken out of the refrigerator] in the oven. A rapid change in temperature will lead to “crazing” (chaps) or breakage.

・Never soak hot tableware in water or place it on the cold kitchen counter. Avoid rapidly heating frozen foods or putting [the cold tableware just taken out of the refrigerator] in the microwave. A rapid change in temperature will lead to “crazing” (chaps) or breakage.

・In cleaning, do not use a metal scrubber, etc. to get rid of the burns or strong dirt and so on resulting from cooking, which may damage the surface.

・High heat may change the color of tableware, but there is no problem in terms of use. It will be restored to the old color after cooled.

Open Fire Safe

The material of this product is heat-resistant ceramic. It can be used over an open flame; it cannot be used in an induction cooker.

This product is made of heat-resistant ceramic.

○ Some of the surface may have cracks (penetrations) at the time of purchase, and others may become penetrated as they are used.

○ The clay particles are coarse and moisture from the food placed in the vessel may seep out.

○ Insufficient drying can cause the following.

・ When put on fire, the moisture absorbed by the vessel may seep out from the sides and burn

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・ If stored with moisture remaining in the vessel, stains and mold can easily form