Lean tuna, a soy sauce marinade, and plain white rice make zuke don. Use sushi rice instead, and you have tekka don. It’s a small change, but a real one.
Compared with plain rice, sushi rice softens the tuna’s slightly bloody tang and fattiness. You can smell the soy sauce in the marinade, but the tuna keeps its own flavor. Take a generous bite with a little wasabi, then a nibble of gari (pickled ginger).
Tekka Don
Recipe Snapshot
- What is it? A classic Japanese rice bowl, tekka don pairs sliced tuna with rice seasoned with a vinegar mixture, plus wasabi and nori (dried seaweed).
- Flavor profile: The marinade lets the lean tuna shine. Simmered mirin and sake soften the soy sauce, gently sour rice brightens each bite, and gari refreshes your palate.
- Why this recipe works: Tasters in a tuna sushi study favored sushi rice over plain rice. Pressing wrap against the fish helps a small amount of marinade coat every side.
- How to make it: Boil only the mirin and sake for 1 minute. During the tuna’s 30-minute soak, season cooked rice, then assemble with nori, tuna, and a little marinade.
- What to expect: Allow 50 minutes in all, 15 of them prep and 5 cooking. The catch is the rice, sticky when hot and hard if overchilled, so fan it to body temperature.
What Is Tekka Don?
Tekka don (鉄火丼) brings raw tuna slices and sushi rice together in a bowl. It’s a familiar dish in Japanese homes and at restaurants. Shredded nori covers the rice, the tuna sits on top, and wasabi goes alongside.
The rice sets it apart from maguro don (a tuna bowl) and zuke don, which both use rice without vinegar seasoning. Lean red tuna is traditional, but the name tekka doesn’t limit the bowl to lean tuna. Some shops use fatty tuna, or toro.
The old word tekka means iron heated to a red glow. There are 2 stories about how it became the name of this bowl. In one, the red tuna inside tekka maki, a tuna roll, resembled glowing iron. In the other, people ate it while gambling in dens known as tekkaba. That second story runs into trouble with the dates. The earliest dictionary example of tekkaba dates to 1915. Dictionaries trace tekka maki no further back than 1925 and tekka don to 1970. An encyclopedia also dates the bowl’s name to after the beginning of the Taisho era (1912 to 1926). So no record ties the bowl’s name to the gambling dens of old Edo, now Tokyo. An 1850 book does mention “tekka sushi,” but that was another dish, finely chopped simmered shiba shrimp over rice. The gambling tale lives on regardless, and it’s still my favorite of the theories.
Tekka don can be made 3 ways. Arrange the sashimi slices straight on the rice and add soy sauce at the table, dip them in soy sauce mixed with wasabi before assembling, or give them a short soak in a soy sauce marinade. Marinating times vary between homes and restaurants, from 5 or 10 minutes to 20 or 30. All 3 preparations are proper tekka don. Marinating doesn’t make one more correct than another. I wouldn’t tell anyone their way is wrong. I use the third method here because, for my taste, marinated tuna makes the best bowl. Ultimately, it’s a matter of preference.
My version starts with a homemade marinade. I briefly boil mirin and sake to drive off the alcohol, then add soy sauce and let a piece of kombu (dried kelp) sit at the bottom. To me, tuna soaked in this mixture has more sweetness and depth than it gets from any other marinade or a quick dip in soy sauce. This marinade is what makes my tekka don a bowl of its own.
Tekka Donburi Ingredients
- Sashimi-grade lean tuna: Look for a lean, deep-red cut, and buy it only if the label says it is safe to eat raw. Funny thing is, before refrigeration, lean tuna is said to have been the prized cut. Fatty toro spoiled sooner and sold for less, reversing the prices we’re familiar with. I recommend choosing a piece with parallel white lines of sinew.
- Soy sauce: The marinade’s saltiness and aroma depend on the soy sauce you choose. Regular Japanese soy sauce works well. Japanese brands, including Kikkoman, are widely available now, so that’s what I’d use if you can find one.
- Sushi rice: To make sushi rice, mix rice vinegar, sugar, and salt into cooked Japanese short-grain rice, folding with a cutting motion. Rice vinegar is my recommendation. Choose an unseasoned bottle. Sushi vinegar or seasoned vinegar already contains sugar and salt, so use that by itself without adding anything else.
Substitution Ideas
- Japanese short-grain rice → Calrose: You can make sushi rice with medium-grain Calrose. The slightly lighter, less sticky grains stay separate as you fold in the vinegar.
- Japanese short-grain rice → Taiwanese or Korean rice: If Japanese rice isn’t available, Taiwanese or Korean rice will do. The Korean rice sold at Asian grocers comes very close to Japanese rice, say some Japanese residents overseas.
- Rice vinegar → Japanese grain vinegar: Grain vinegar is also a common choice for sushi rice in Japanese homes. Expect a slightly cleaner sourness that is a little less mellow than rice vinegar.
- Kombu → Korean dashima: Dashima and Japanese kombu are the same seaweed, so there’s no change in how you use it. Reports from some Japanese people living abroad place kombu in Chinese, Japanese, and Korean grocery stores.
- Soy sauce → Chinese light soy sauce: Use the same quantity of Chinese light soy sauce for a close match with a cleaner, slightly less deep flavor. I used it while living in England, and some Japanese cooks overseas make this swap too.
- Sake → cooking sake: Cooking sake is perfectly fine here and is used in plenty of Japanese homes. Just bear in mind that the added salt makes the finished dish a tiny bit saltier.
- Shiso → Korean perilla leaves: Korean perilla leaves resemble shiso in size and shape. They’re used as a substitute even in Japan. Their milder aroma calls for about 1.25 times the amount.
- Shiso → tía tô: The aroma of Vietnamese perilla is very similar to shiso’s, though stronger, and the undersides of its leaves can be purple. Some Japanese cooks turn to it as a substitute abroad.
- Shiso → skip it: You can go without shiso. You could also try growing this easy herb from seed, which is a pleasure in itself.
- Gari → skip it: You can enjoy the bowl without gari. Making your own at home is an option if you can’t buy it.
- Wasabi → skip it: No wasabi on hand? Leave it out.
- Green onions → skip them: Green onions are optional.
Substitutions that I don’t recommend:
- Non-sashimi ahi steak instead of a sashimi-grade block: Tuna without an explicit safe-to-eat-raw label is for cooking. Whatever you do, never use it for sashimi or in this marinade.
- White vinegar instead of rice vinegar: Next to the rounder taste of rice vinegar, white vinegar makes the sushi rice taste harsh and sharp.
- Chinese dark soy sauce instead of soy sauce: Its thickness and sweetness are too much for this dish. Choose Chinese light soy sauce if using a Chinese variety.
- Rice vinegar and sugar instead of mirin: Adding that acidity upsets the balance of flavors.
- Vinegar instead of sake: This completely unbalances the dish.
- Beni shoga instead of gari: Beni shoga (red pickled ginger) is a separate condiment, pickled in plum vinegar. It tastes much hotter and saltier.
Can’t find another Japanese staple? My guide to Japanese ingredient substitutes has more swaps to try.
How to Make My Tekka Don
i. Combine the mirin and sake in a small saucepan and set the heat a little above medium.
ii. Bring to a boil, boil for 1 minute, and switch off the heat. This is nikiri, the step that boils off the alcoholic smell of mirin and sake.
iii. Add the soy sauce with the heat off, swirling the pan to combine.
i. Transfer the marinade to a container large enough for a single layer of tuna. Let it cool until it no longer feels warm to the touch.
Tip: To cool it faster, stand the container in a bowl of ice water.
ii. Submerge a small piece of kombu in the cooled liquid.
iii. Coat both sides of each tuna slice by dipping it in the marinade. Arrange the slices flat in the container, with no overlap.
iv. Lay plastic wrap directly against the tuna’s surface, then refrigerate for 30 minutes to marinate.
i. Use the tuna’s 30-minute marinating time to prepare the sushi rice. Stir the rice vinegar, sugar, and salt in a small bowl until the sugar and salt dissolve.
I’ve found that doing 2 things at once is less about skill than deciding on the order before you begin.
ii. Place the warm rice in a large bowl and add the vinegar mixture.
Season the rice while it’s warm, since the mixture soaks into cooler rice more slowly.
iii. Work the vinegar evenly through the rice with a rice paddle, using a cutting motion to keep the grains intact.
iv. Fan the rice to body temperature, about 37°C/98.6°F. Cover it with a damp cloth that you’ve wrung out firmly to prevent drying, and leave it out of the fridge.
I’ve taught myself almost everything I know about cooking. Sushi was an exception. I had a short, strict lesson with a retired Tokyo sushi chef who was over 80. Hot sushi rice becomes sticky and makes the fish on top spoil faster. Overcool it, though, and the rice hardens, becomes difficult to handle, and won’t fall apart on your tongue.
i. Spoon the sushi rice into bowls and top with shredded nori.
ii. Remove the tuna from the marinade and arrange it over the nori.
iii. Drizzle a little of the remaining marinade onto the tuna in each bowl. The nori forms a layer between fish and rice that stops the marinade soaking into the rice.
iv. Finish with your choice of wasabi, gari, shiso, and chopped green onions.
Tips for the Best Tekka Bowl
- Check that the tuna’s label permits eating it raw. Soy sauce marinade adds flavor, but it won’t make raw fish safe to eat. At the store, the package should say so in plain words.
- Adjust your rice preparation for US-grown rice. Some Japanese people living overseas give US rice the same thorough wash they would give rice at home, even if the package says rinsing isn’t necessary, because the water still turns cloudy white and a slight bran smell remains. I believe rice deserves to be cooked properly whenever it takes the leading role, as it does in sushi.
- Consider your pot or rice cooker. For some Japanese expats, moving to a heavy pot, a Japanese clay pot, or a similar vessel made the difference in cooking Calrose well. There’s also a firmly held belief that a more expensive Japanese-brand rice cooker improves the taste. I use a Zojirushi and recommend it because a US version is available.
Once you’ve cooked the rice well, making tekka don is simply a matter of seasoning it during the tuna’s 30-minute marinade.
Storage & Meal Prep
Fridge: Eat marinated tuna that day. Sealed leftover rice keeps a day but hardens, so rewarm with a little vinegar to body temperature.
Freezer: Tuna, usually frozen once already, turns watery if refrozen. Freeze leftover rice in portions and reheat it the same way, until steaming hot.
Meal prep: Chill the marinade from the night before or morning, adding kombu that day. Keep same-day rice unchilled under a damp cloth and serve within 2 hours.
What to Serve With Tekka Don
- Clam Miso Soup (Asari no Miso Shiru)
- Spinach Ohitashi
- Kinpira Gobo (Braised Burdock)
- Steamed Egg Custard (Chawanmushi)
Tekkadon Troubleshooting
If the grains are crushed and coated in a gluey layer, the rice was likely stirred around the bowl. A cutting motion keeps sushi rice from turning sticky. Switch to cutting through the rice with your paddle and lifting from underneath to distribute the vinegar mixture.
A glossy puddle on the surface can mean the rice was too wet or you added more vinegar mixture than it could absorb. Spread it out, then continue fanning and mixing with a cutting motion to remove excess moisture. Follow the recipe card’s quantities when making the vinegar mixture.
When the grains are hard and seasoned only on the outside, the rice had cooled before you added the vinegar. Cold rice takes up the mixture slowly and forms stubborn clumps. While the rice is still warm, use the paddle’s cutting motion to separate those lumps as you mix. If it’s completely cold, microwave it until steaming hot before breaking them apart.
More Japanese Sushi Recipes
Now that you know how to mix sushi rice, use that same rice for the rolls and chirashi bowls in my Japanese Sushi Recipes.
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Tekka Don (Japanese Tuna Sashimi Bowl)
Ingredients
Marinated Tuna
- 3 tbsp mirin
- 3 tbsp sake
- 3 tbsp Japanese soy sauce (koikuchi shoyu)
- 2 g dried kelp (kombu) or Korean dashima
- 200 g sashimi grade tuna a lean cut labeled safe to eat raw, sliced for sashimi
Sushi Rice
- 1 tbsp unseasoned rice vinegar (komezu) or Japanese grain vinegar
- 1 tsp sugar
- ½ tsp salt
- 400 g cooked Japanese short-grain rice about 200 g per bowl, warm
To Serve
- ½ sheet kizami nori (shredded nori) toasted nori cut into thin strips, or store-bought
- wasabi paste optional
- pickled sushi ginger (gari) optional
- perilla leaves (shiso) optional
- finely chopped green onions optional
The ingredient brands and tools I trust are in my Japanese pantry guide and my cooking tools guide.
Can’t find certain Japanese ingredients? See my substitution guide here.
Instructions
Marinate the Tuna
- Combine 3 tbsp mirin and 3 tbsp sake in a small saucepan over medium-high heat. Once it comes to a boil, keep it boiling for 1 minute and turn off the heat.
- With the heat off, add 3 tbsp Japanese soy sauce (koikuchi shoyu) and swirl the pan to blend. Pour the marinade into a wide container that holds the tuna in one layer and cool it until it no longer feels warm to the touch.
- Sink 2 g dried kelp (kombu) in the cooled marinade. Dip 200 g sashimi grade tuna into it one slice at a time, turning each to coat both sides, and lay the slices flat side by side. Do not stack or overlap them.
- Press plastic wrap right onto the surface of the tuna and refrigerate for 30 minutes.
Make the Sushi Rice
- While the tuna marinates, stir 1 tbsp unseasoned rice vinegar (komezu), 1 tsp sugar and ½ tsp salt together in a small bowl until the sugar and salt dissolve.
- Put 400 g cooked Japanese short-grain rice in a large bowl while it is still warm. Pour the vinegar over the rice and fold it through with a rice paddle, using a cutting motion, until every grain is coated. Keep the grains whole as you go.
- Fan the rice as it cools. Stop at body temperature, about 37 °C (99 °F), and cover the bowl with a well-wrung damp cloth.
Assemble the Bowls
- Divide the sushi rice among the bowls and scatter ½ sheet kizami nori (shredded nori) over the rice.
- After its 30 minutes, take the tuna out of the fridge, lift the slices from the marinade and arrange them on top the nori. Spoon ½ tbsp of the leftover marinade over the tuna in each bowl. If you like, garnish with wasabi paste, pickled sushi ginger (gari), perilla leaves (shiso) and finely chopped green onions to taste. Enjoy!
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