A donabe is a lidded earthenware pot made to cook over a direct flame. Earthenware is fired clay that remains somewhat porous: its tiny open spaces can take in water. The pot’s thick walls heat slowly, hold heat, and keep cooking food after the flame is off. That porosity is why it needs seasoning before first use: starch is cooked in it, usually as rice porridge, so the pores begin to seal. Over years, fine hairlines called crazing are expected rather than failure. Whether it works on a particular hob depends on the maker.
A clay pot before it is a cooking method
The word donabe refers to the pot, not to a single dish or cooking technique. Its familiar form—a deep clay body with a fitted lid—can be used for simmered dishes, soups, rice, and food served directly at the table. The important feature is the ceramic body. Clay responds to heat differently from a thin metal pan.
A donabe takes time to warm, then releases stored heat gradually. Turning off the flame does not immediately stop the cooking inside. This lingering heat is part of the pot’s usefulness, but it also explains its care. A porous ceramic body can absorb moisture, while rapid changes from hot to cold or wet to dry can place stress on the clay. Seasoning, careful heating, and complete drying are not ceremonial extras. They follow from the material.
Two clays, one object
Iga ware is a regional pottery tradition associated with notably porous clay. Accounts from Iga pottery makers describe the clay as coming from the bed of a former lake. That description is best treated as the makers’ account of the local material rather than as a precise geological history. When fired, the clay retains an open structure with minute spaces that can take up water and starch. This porosity contributes to the slow, stored heat associated with an Iga-style donabe, while also making initial sealing and thorough drying important.
Banko ware is another regional pottery tradition with a different material history. According to the Banko ware centre’s own account, petalite—a lithium-bearing mineral used in ceramic clay bodies—was adopted in Banko clay in 1959 to improve resistance to thermal shock, the stress created when temperature changes strain different parts of a pot unevenly. The centre also says the region makes about 80% of Japan’s donabe and that Banko ware received Traditional Craft designation in 1979.
The designation concerns provenance and process, not a quality ranking, as explained in reading “handmade” in Japanese tool listings. Iga and Banko describe distinct clay traditions, not a league table. In either case, the individual maker’s instructions remain more useful than assumptions based on the regional name alone.
Medome: the starch seal
Medome is the Japanese term commonly used for the initial starch-sealing treatment. Its purpose is simple: starch enters the clay’s open pores and helps close them, reducing the chance that liquid will seep through the body or that the walls will absorb flavours. It can also settle into the fine lines that appear in the glazed surface.
Makers’ instructions vary—follow the one that came with the pot. The generic outline is a starch-rich simmer, commonly based on rice porridge, followed by cooling in the pot, rinsing, and complete drying. This is a principle rather than a universal recipe. Clay composition, glaze, construction, and any factory treatment can change what a particular pot requires.
Medome is normally performed before first use. A maker may also advise repeating it if the pot has been scrubbed hard, starts to weep liquid, or has sat unused for a long period. Those signs matter more than a fixed calendar. If the supplied guidance says the pot is already treated or gives a different process, that guidance takes priority.
Which hobs can take a donabe?
Gas is the usual heat source for a traditional donabe because the pot is made for direct flame. Induction is different: an induction hob uses a magnetic field to heat compatible material rather than heating clay directly. A donabe belongs on induction only when the maker has built that model for it or expressly approves use with an adapter plate, a compatible metal plate that transfers heat to the pot.
Some contemporary lines are designed for induction, but most traditional donabe are gas-only. Read the base and the maker’s page. A metal-looking detail, a flat base, or the word “donabe” does not establish compatibility. Guidance for other electric hobs also varies, so the stated heat-source approval must control.
Common maker guidance is to avoid heating a donabe empty, placing it over flame while its outer base is wet, or setting a hot pot on a wet or cold surface. Each situation can produce concentrated or abrupt thermal stress. Exact handling directions still belong to the maker of the individual pot.
Crack or crazing?
Crazing is a network of very fine lines in the glaze, the glass-like surface layer fused onto the clay. Repeated heating can make this network more visible. Starch and cooking residue may enter the lines, and the pattern may darken with use. That change is normal for many donabe and, to many owners, part of the pot’s beauty—the same interpretation of accumulated change discussed in wabi-sabi in the working kitchen.
A structural crack is different. A line that passes through the body and weeps liquid, produces a newly dull sound when the pot is lightly tapped, or continues to grow is a reason to retire the pot. Surface crazing records use; a through-crack can compromise both strength and safe heating.
Never store porous clay damp
A rinsed donabe can look dry while moisture remains inside its porous body. Stored too soon, it can develop mould or lingering smells. Residual water in the base also creates the wet-pot-on-flame condition that makers commonly warn against.
Let the body dry fully upside down on a surface that permits airflow, with the lid removed and dried separately. Put the pot away only when both pieces are completely dry. The cupboard must not become the final stage of drying.
What size for two?
Makers often label donabe by suggested servings and, for rice pots, by gō, a traditional Japanese unit used to describe an amount of uncooked rice. Those labels are more useful than comparing names such as small or medium, which need not mean the same thing across different makers.
For two people, choose around the dish likely to be prepared most often rather than the larger gathering that might happen occasionally. A pot intended mainly for rice may be shaped and labelled differently from one intended for shared simmered dishes. The maker’s serving guidance, stated hob compatibility, and care sheet form the clearest basis for a choice; no regional clay name removes the need to read them.
A donabe is an object that expects maintenance and gradually shows its use. That relationship among material, care, and daily work places it naturally within the broader kitchen tools guide.