All Clayful product are handmade in our workshop in Vantaa, they are made of porcelain and fired to 1290C. All the products are glazed inside with a food safe lead-free glazes, some wares are glazed outside with the same kind of glaze. Products that are left unglazed on the outside are wet sanded after the last firing, resulting in a silky-matte surface.
Unless otherwise stated, the products are dishwasher and microwave safe. They are not ovenproof and do not tolerate dramatic change in temperature (for example, going to oven straight from freezer).
Although our wares are vitrified – meaning that the temperature in the kiln was high enough to turn certain amount of clay component into glass, and make porcelain impervious to water) – and water absorption is close to zero, unglazed surfaces are still more susceptible to stains than glazed ceramics. To prevent stains from becoming persistent, keep the wares clean with regular hand- or machine- wash.
If a stain does appear, it can typically be removed by scrubbing the surface with the abrasive side of a sponge and dishwashing liquid. For more stubborn stains, a melamine sponge (aka “magic sponge” or “white sponge” may prove to be effective.
Yes. Clayful is registered as a Finnish Food Contact Materials operator and complies with all applicable European safety regulations concerning manufacture of products that intend to come in contact with food. No chemicals that are on the candidate list of particularly dangerous chemicals are used in manufacturing of Clayful wares.
Declarations of compliance and the inspection report from the Finnish Food Authority (year 2024).