What Is a Donabe? History and Origins

There is a pot in my kitchen that I reach for more than any other — not the enameled Dutch oven, not the stainless saucier, but a matte grey clay vessel from Iga, Japan, that looks like it belongs in a museum. My donabe. It cooks rice better than my rice cooker. It produces hot pots so fragrant they fill the entire apartment. And every time I pull it from the cabinet, its pores still faintly carry the memory of last winter's dashi. We cover hinoki cypress cutting boards for Japanese cooking in detail in a separate guide.

Donabe are clay cooking pots that have been used in Japan for millennia. The word breaks down simply: do (土) means earth or clay, and nabe (鍋) means pot. But the simplicity of the name belies the sophistication of the object. A well-made donabe from Iga or Banko is one of the most technically refined pieces of cookware you will ever own — the product of volcanic geology, centuries of craft, and a cooking physics that modern stainless steel cannot replicate.

This guide covers everything: the science behind why donabe cook differently, the geology of the clay, how to season and care for one, the specialist types worth knowing, and how to buy one that will last decades.

What Is a Donabe? History and Origins

Donabe trace their origins to the Jomon period (14,000–300 BC), making them among the oldest cooking vessels in human history. Archaeological evidence from across Japan shows Jomon people using clay pots for boiling food — a revolutionary technology at the time. The word “Jomon” itself means “cord-marked,” a reference to the rope-impressed patterns on their pottery. The donabe's DNA runs that deep.

The most prized donabe today come from Iga, a region in Mie Prefecture where the craft has been continuous for over 1,000 years. Iga's dominance isn't arbitrary — it comes down to geology. The region sits on what was once the bed of ancient Lake Biwa, Japan's largest lake, which began shrinking and moving northward roughly 400,000 years ago. As the lake receded over hundreds of thousands of years, it deposited layer upon layer of lacustrine sediment: silt rich in fossilized microorganisms, ancient plant matter, and microscopic organic debris from a prehistoric ecosystem.

This sediment became the clay that Iga potters work with today. When an Iga donabe is fired at high temperature, the fossilized organic material inside the clay burns away completely, leaving behind a web of microscopic voids — a porous structure unlike any other clay in Japan. It is this porosity that gives Iga donabe their exceptional heat retention and their unique cooking properties.

The second major donabe-producing region is Banko, in Mie Prefecture's Yokkaichi city. Banko-yaki uses a different clay body — denser, less porous — and is known for producing thinner-walled, lighter pots that heat more quickly. Banko donabe are more widely available at lower price points and perform beautifully for everyday use. They simply don't have the heat mass of Iga ware.

Why Donabe Cook Differently: The Science of Far-Infrared

Every material radiates heat differently. Steel and aluminum pots conduct heat primarily through direct contact — they heat the liquid or food touching the pot surface. Clay pots work differently. When a donabe reaches temperature, the clay radiates far-infrared rays (FIR) — a spectrum of electromagnetic radiation with wavelengths between 4 and 1,000 micrometers — outward and inward simultaneously.

Far-infrared radiation penetrates food directly rather than heating it from the outside surface in. This matters enormously for cooking outcomes. When far-infrared energy reaches the water molecules and organic compounds inside a piece of food, it causes them to vibrate at the molecular level, generating heat from within. The result is more even cooking, better moisture retention, and — crucially for Japanese cooking — enhanced umami development.

The science behind this is measurable: studies on infrared cooking have shown that far-infrared radiation activates what researchers describe as the “resonance effect” in water-rich foods. When the frequency of the FIR matches the natural vibration frequency of water molecules (around 2.5–10 micrometers), absorption is maximized. The clay body of an Iga donabe, with its high silica content and porous structure, happens to emit FIR concentrated in exactly this range during normal cooking temperatures of 200–400°C.

For rice specifically, the difference is dramatic. Donabe-cooked rice develops a distinctly nutty sweetness and a texture — each grain separate yet with a pleasing chew — that electric rice cookers struggle to match. The FIR penetrates the bran and reaches the starch inside each grain, gelatinizing it more evenly. This is why specialist donabe rice cookers like the Nagatani-en Kamado-san remain cult objects among serious Japanese home cooks despite costing six to ten times more than an electric cooker.

For hot pots and braises, the slow, even heat from the clay walls means that delicate ingredients like tofu and fish cook without toughening, and collagen-rich ingredients like chicken thighs convert more fully to gelatin. Broths cooked in donabe have a rounded, full-bodied quality that is hard to achieve in a thin metal pot.

The Kannyu Cracks: Wabi-Sabi in Your Cookware

New donabe users sometimes panic the first time they notice fine hairline cracks spreading across their pot's surface. These are kannyu (貫入) — crazing cracks in the glaze — and they are not a defect. They are a sign that your donabe is alive.

Clay and glaze expand and contract at slightly different rates with each heating and cooling cycle. Over time, this stress causes the glaze to develop a network of fine surface cracks. In Iga-yaki especially, these kannyu are considered an aesthetic virtue — an expression of the wabi-sabi philosophy that finds beauty in imperfection, impermanence, and the visible passage of time. A donabe covered in kannyu is a donabe that has been used, seasoned, and loved.

Kannyu also have a functional dimension. The slight movement they allow in the glaze gives the clay structure more flexibility to accommodate thermal expansion, which paradoxically makes the pot more durable over time, not less. A glaze that shatters resists cracking; a glaze that crazes absorbs stress. The microscopic movements protect the structural integrity of the clay body underneath.

What you do need to watch for is a structural crack — a crack that goes through the clay body, not just the glaze, often accompanied by visible separation or a leak during use. This is different from kannyu and does indicate damage. To check, fill your donabe with water and let it sit for 30 minutes on a dry surface. No moisture underneath means the body is sound.

Types of Donabe: From Classic Hot Pot to Stovetop Smoker

The standard donabe — wide, round, with a domed lid — is designed for nabemono (hot pots) and simmered dishes. But Iga potters, led largely by Nagatani-en, have developed a range of specialist donabe that use the same clay body for completely different cooking applications.

The Kamado-san (literally “kitchen range”) deserves special mention. Its double-lid design — an inner lid that seals the steam, an outer lid that provides additional weight — creates a gentle pressure effect that mimics traditional kamado (clay stove) cooking. The result is rice with exceptional texture: a lightly crispy bottom layer (okoge) that is deliberately cultivated in Japanese cooking, and perfectly tender grains above. Nagatani-en claims a 23-minute cook time from cold start, and in my experience, that is accurate.

The Ibushi Gin is the most surprising specialist type — a clay pot that functions as a compact indoor smoker. A small amount of wood chips placed in the base smolder when the pot heats on the stovetop, and the tight-fitting lid traps the smoke. Salmon, tofu, cheese, and vegetables all take on real smoke character in 15–20 minutes without triggering smoke alarms (the chip quantity is small, and the clay absorbs much of the particulate). It is one of the more clever applications of clay cooking technology.

How to Season (Medome) Your New Donabe

Before using a new donabe for the first time, you must perform medome (目止め) — literally “pore stopping.” This is not optional. An unseasoned donabe is structurally vulnerable: if water penetrates the porous clay body and then boils rapidly, steam pressure can crack the pot from the inside.

Medome seals the exterior and interior pores with starch, creating a barrier that prevents liquid infiltration while preserving the clay's heat-radiating properties.

Medome Instructions (Do This Once Before First Use)

1. Check for dryness. The donabe must be completely dry before medome. If it is new from the shop, it is likely fine. If it has been near water, leave it upside-down on a dry cloth for 24 hours.
2. Fill to 70–80%. Add water to 70–80% of the pot's capacity. Do not overfill — the rice and water will expand.
3. Add leftover cooked rice. One or two cups of already-cooked rice (plain white rice, no salt or seasoning). If you don't have leftover rice, plain white rice cooked at the normal ratio works. The cooked starches dissolve more readily into the water than raw starch.
4. Heat slowly. Start on the lowest flame. Do not use high heat at any point during medome. Bring the mixture slowly to a simmer over 15–20 minutes.
5. Simmer for 20–60 minutes. Maintain a gentle simmer. The longer you simmer, the more completely the starch solution penetrates and seals the clay. 30 minutes is a practical minimum; 60 minutes is ideal for a new Iga-yaki.
6. Cool completely. Turn off the heat and leave the donabe to cool naturally to room temperature. Do not add cold water. Do not rush this step. Thermal shock at this stage can crack an unsealed pot.
7. Discard the contents and rinse. Rinse gently with warm water. No dish soap — ever. The surfactants in dish soap penetrate the clay pores and can cause cracking during subsequent heating.
8. Air-dry upside-down overnight. Turn the donabe upside-down on a clean, dry cloth. The base and rim both need to dry fully. Any trapped moisture is the enemy.

After medome, your donabe is ready for use. Some potters recommend repeating a lighter medome (just water with a few tablespoons of flour or rice, 15 minutes) twice a year if you use the pot heavily. This is precautionary maintenance, not strictly necessary.

What to Cook in a Donabe

The donabe's natural home is the Japanese dining table, but its applications extend well beyond traditional nabemono. Here is what it does well:

Nabemono (Japanese Hot Pot)

This is what most donabe are designed for — communal one-pot meals where ingredients are added to a simmering broth at the table. The clay maintains heat long after the pot leaves the burner, which is essential for tabletop cooking. Classic variations include yosenabe (mixed hot pot), shabu-shabu (thin-sliced beef in kombu dashi), chankonabe (sumo wrestler's protein-heavy pot), and sukiyaki (sweet soy broth with beef). For all of these, use a good dashi broth as your base — the donabe's far-infrared cooking will amplify its flavors.

Steamed Rice

Using your standard donabe for rice requires slightly more attention than a Kamado-san — no timer indicator, no double lid — but the result is excellent. Wash rice until the water runs clear, soak 30 minutes, add a 1:1 water ratio (slightly less water than typical for firmer, more separate grains), bring to a boil on medium heat, reduce to lowest flame for 10–13 minutes, then remove from heat and steam covered for 10 more minutes. The gentle far-infrared heat produces nutty, well-defined grains.

Soups and Dashi Broths

The slow, even heat of clay is ideal for extracting dashi. Kombu cold-steep in your donabe overnight, then bring slowly to just below a simmer (around 60°C) to extract glutamates without bitterness — the clay's low, even heat makes this easier to control than on a thin metal pot. Add katsuobushi (bonito flakes) after, steep briefly, and strain. The resulting dashi has noticeably more depth than dashi made quickly on high heat.

Congee (Okayu)

Japanese rice porridge cooked in a donabe has a silky, flowing consistency that is difficult to achieve otherwise. The far-infrared radiation breaks down the starch granules of each grain more completely than direct heat, releasing more amylose into the water. Use a 1:10 rice-to-water ratio, cook covered on low for 45–60 minutes. The result is a congee with exceptional body.

Braised Dishes and Oden

The donabe's heat retention makes it ideal for long, slow braises. Oden — Japan's winter stew of daikon, tofu, fish cakes, and eggs in a light dashi broth — is traditionally served and kept warm in a donabe. The clay maintains a gentle simmer that keeps everything hot without breaking delicate ingredients apart.

Steamed Vegetables and Dumplings

Place a bamboo steamer or the Mushi Nabe insert over simmering water in your donabe, and it becomes an excellent steamer. The clay's moisture-absorbing walls create a slightly humid cooking environment that is gentler on vegetables than direct steam. Japanese mushrooms — maitake, shiitake, enoki — are exceptional steamed briefly over dashi in a donabe.

Donabe Care, Cleaning, and Storage

After Every Use

• Never plunge a hot donabe into cold water. Thermal shock is the leading cause of donabe breakage. Allow it to cool to room temperature before washing.
• Clean with warm water and a soft sponge only. No dish soap, no steel wool, no abrasives. If food is stuck, fill with warm water and let soak for 20–30 minutes before gently wiping.
• Dry completely before storing. This cannot be overstated. Storing a damp donabe causes mold growth in the pores and, more seriously, sets up the conditions for a crack on the next heating. Air-dry upside-down on a cloth or rack until the base is completely dry — usually overnight.

Dealing with Stains and Odors

If your donabe picks up stains from soy sauce, miso, or strongly colored ingredients, fill it with water, add 3–4 tablespoons of baking soda (not vinegar — acids can damage the clay), and simmer gently for 20 minutes. This also addresses lingering odors. Rinse well and dry completely.

For stubborn mineral deposits or calcium buildup from hard water, a diluted solution of white vinegar (1 part vinegar, 3 parts water) applied briefly with a soft cloth, followed immediately by a thorough rinse and complete drying, will dissolve the deposits without harming the clay.

Long-Term Storage

If storing your donabe for more than a few weeks — a summer hiatus, for instance — wrap it in newspaper or breathable cloth (not plastic). Newspaper absorbs residual moisture and prevents mold. Store in a dry, ventilated space away from direct sunlight, which can cause uneven drying and subtle surface fading in some glazes.

What Not to Do

• Do not use on induction cooktops unless specifically labeled induction-compatible (a very small number of donabe contain iron in their base for induction use). Most Iga and Banko donabe are gas/electric only.
• Do not use for deep frying. The porous clay absorbs oil, creating a persistent fire hazard on subsequent heating and ruining the pot's ability to hold and release food cleanly.
• Do not put in the dishwasher. Ever.
• Do not microwave unless the manufacturer explicitly states it is safe.
• Do not use on electric coil burners without a heat diffuser. The uneven hot spots of a coil burner can crack a donabe. Use a metal heat diffuser plate between the coil and the clay.

Buying Guide: What to Look For in a Donabe

The donabe market ranges from $25 imported pots of uncertain origin to $400 hand-crafted Iga-yaki pieces. Here is what actually matters when choosing one.

Iga-Yaki vs Banko-Yaki: Which Is Right for You?

Key Buying Criteria

Look for the kiln mark. Authentic Nagatani-en pieces — the most recognized Iga-yaki producer, founded in 1832 — carry their kiln stamp on the base. Nagatani-en's quality control is strict: pots that don't pass their pressure and porosity tests are destroyed rather than sold. Other reputable Iga producers include Iga Mono and Tsukiusagi. If the origin is unclear, it is likely Banko or an import.

Check the fit of the lid. A well-made donabe lid should seat snugly without being airtight — you want steam to escape through a small vent or around the rim, not build pressure. Lift the lid an inch and release it: a gentle “shoop” sound as it reseats indicates good fit.

Examine the base. The exterior base should be unglazed or only lightly glazed. A heavily glazed base restricts the clay's ability to breathe and can actually impair heat distribution. The Iga aesthetic is matte and rough — intentionally so.

Choose the right size. For a household of two, a 2–3 quart (2–3 liter) donabe serves nabemono generously. For four to six people, a 4–5 quart (4–5 liter) pot. For rice cooking specifically, note that donabe rice pots work best when filled to their designed capacity — undersizing the rice amount produces uneven results.

New vs used. Old donabe occasionally appear in Japanese antique markets (antique-ichi) and estate sales, sometimes quite cheaply. A used donabe that has been well cared for can be excellent — the clay is already seasoned through years of use, and the kannyu cracks are a beauty mark. Inspect for structural cracks (water test) and check that the lid still fits. Avoid any pot that smells strongly of mildew, which can penetrate deeply into the porous clay.

Where to Buy

In Japan, department store basement food halls (depachika) and kitchenware specialty shops (Tokyu Hands, Kappabashi district in Tokyo) carry a good range. Outside Japan, trusted importers include Japan Centre (UK), Toiro Kitchen (US) — which focuses specifically on Iga-yaki and stocks the full Nagatani-en range — and scattered Japanese import shops. Avoid marketplace listings of generic “donabe” with no kiln information at suspiciously low prices; these are typically thin Banko pots or Chinese imports with unreliable temperature tolerance.

NLM Iga Clay Deep-Dive

Frequently Asked Questions

Can I use a donabe on a gas stove?

Yes. Gas is the ideal heat source for donabe. The flame distributes heat gently around the clay base, and you have easy, immediate control over temperature. Start on low heat and increase gradually — never put a cold donabe directly over a high flame.

Can I use a donabe on an electric or induction cooktop?

Standard donabe are not induction-compatible. For electric coil burners, use a metal heat diffuser between the coil and the donabe base to prevent hot spots and cracking. Glass-top (ceramic) electric cooktops are generally fine with donabe as long as you start on low heat, since the heat distribution is more even than coil burners. A small number of specialist donabe — typically Banko-yaki designs with iron incorporated into the base — are marketed as induction-safe; look for explicit labeling.

My donabe cracked. Is it still usable?

First, determine whether it is a glaze crack (kannyu) or a structural crack through the clay body. Kannyu — fine surface crazing in the glaze — is normal, desirable, and no cause for concern. A structural crack that goes through the clay, causes leaking during the water test, or is visibly gaping requires retirement. Do not use a structurally cracked donabe over heat.

How often do I need to re-season (re-medome) my donabe?

Once at purchase is sufficient for most cooks. If you notice the pot has absorbed a strong odor that cooking isn't clearing, or if it has been stored for a long season without use and the clay seems unusually dry, a light maintenance medome (water with a small amount of flour, simmered 15 minutes) is a reasonable precaution. Heavy users cooking three or four times a week rarely need to re-medome; the regular starch from cooking effectively re-seals the pores continuously.

Why does my donabe smell like earth after cooking?

New Iga-yaki donabe have a pronounced mineral and earthy smell when first heated — a product of the volcanic lake sediment in the clay. This smell dissipates over the first several uses. The medome process helps accelerate this. If the earthiness lingers for more than five or six uses, simmer a solution of baking soda and water (3 tablespoons per quart) for 20 minutes to neutralize remaining organic compounds in the clay.

What is the difference between a donabe and a Chinese sand pot (sha guo)?

Both are unglazed or partially-glazed clay cooking vessels, and both rely on similar heat-retention principles. Chinese sand pots use a different clay body — typically a coarser mixture of clay and sand — and have a wire-reinforced exterior frame to hold the vessel together as it expands. They tend to be cheaper, more fragile, and shorter-lived than quality Japanese donabe. The cooking physics are broadly similar; the craftsmanship and material depth of Japanese Iga-yaki are in a different category.

Can I cook acidic foods (tomatoes, citrus) in a donabe?

Occasionally, yes, but acidic foods accelerate the leaching of minerals from the clay and can erode the glaze over time. Japanese donabe are designed for broth-based, neutral to lightly salted cooking. If you want to add a squeeze of yuzu or ponzu at the table, that is fine — brief contact with the cooked food won't harm the pot. Regularly simmering tomato sauce or highly acidic braising liquids will shorten the pot's lifespan.

Where can I find recipes specifically designed for donabe?

Sonoko Sakai's Japanese Home Cooking and Naoko Takei Moore's Donabe: Classic and Modern Japanese Clay Pot Cooking (Ten Speed Press) are the two essential English-language references. Naoko's book, in particular, was written in collaboration with Nagatani-en and covers every specialist donabe type with detailed recipes. For nabemono specifically, see our complete nabemono guide and our Japanese mushrooms guide for the best hot pot fillings.

The Longer View

A good donabe is not a gadget. It does not have settings, timers, or a digital display. It requires you to pay attention — to the sound of the simmer, the smell of the clay, the steam telling you the rice is almost done. In this way, cooking with a donabe is a counterweight to the frictionless convenience of modern kitchen equipment.

The Jomon people who cooked in clay pots 10,000 years ago were, in a real sense, using the same technology. The clay is different. The craft is more refined. But the principle — earth, water, fire, food — is unchanged. A well-cared-for Iga-yaki donabe will outlast any other pot in your kitchen, and if you care for it properly, it will be better at the end of its life than at the beginning. The pores will be seasoned through years of dashi and rice starch. The kannyu cracks will trace the history of a hundred winter hot pots. It will cook better than it does today.

That is not something you can say about a saucepan.