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The Best Corn on the Cob Ever: Yaki Tomorokoshi
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Last updated
Last updated October 22, 2026: the recipe was rebuilt with step photos, exact timing, and a plain-English method, the dead short links were replaced with tagged links, the teriyaki variation got its own section, and the Short Version, FAQ, Bottom Line, and Winston poll were added.
Yaki tomorokoshi (焼きとうもろこし, pronounced ya-key toe-moe-roe-koe-she) is Japanese grilled corn: ears blanched for three minutes, then grilled while you baste them again and again with a glaze of soy sauce and mirin until they shine. It is the corn sold at summer festivals all over Japan, and if you like corn on the cob, you will absolutely love this recipe. I am willing to bet you will think this is the best corn on the cob you have ever eaten. There is a video near the end if you want to watch the method before you fire up the grill.
The Short Version
- The glaze is a 1 to 1 mix of soy sauce and mirin: 3 tablespoons of each for every 4 ears of corn. Simmer it 4 to 5 minutes before it ever touches the corn.
- Blanch the shucked corn in boiling water for about 3 minutes first. It finishes faster and more evenly on the grill or in the oven.
- Grill or bake at 400 degrees for about 20 minutes, turning often and re-basting every turn. The glaze burns if you walk away, so do not walk away.
- Skip the salt, because the soy sauce brings plenty. Finish with shichimi togarashi, the Japanese seven-spice blend, instead of plain black pepper.
Table of Contents
Contents
- Ingredients
- The Sauce
- Grill or Oven
- Real Teriyaki Sauce Variation
- Frequently Asked Questions
- The Bottom Line
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Ingredients
The only two things you might have trouble finding locally are mirin and Japanese seven spice. Everything else is already in your kitchen. I have linked the two specialty items below in case your grocer does not stock them.
- Fresh corn on the cob, husks and silk removed
- Soy sauce, 3 tablespoons per 4 ears
- Mirin, 3 tablespoons per 4 ears. Mirin is sweetened sake, Japanese rice wine, and it is what gives the glaze its shine.
- Shichimi togarashi, Japanese seven spice, for finishing. You may never use regular pepper on corn again.
- Optional: a little extra sugar or mirin if you want the glaze sweeter, or a knob of butter at the table.
Shichimi togarashi deserves its own word, because it is doing more work here than any pepper shaker can. It is a blend of chili pepper with six other spices and aromatics, sold in most grocery stores now in the Japanese section. It brings warmth and citrus and sesame notes rather than plain heat, and a light dusting over the glazed corn at the end is the difference between good corn and the corn people ask about.
The Sauce
For the sauce, you want a 1 to 1 combination, in whatever quantity your pile of corn requires. Mix 1 part soy sauce with 1 part mirin, bring it to a boil on the stove, then reduce to low heat and cook for 4 or 5 minutes. Turn off the heat. If you added extra sugar, make sure it has fully dissolved before you stop. That is the whole sauce. Two ingredients, five minutes, and it keeps in the refrigerator for days if you make extra, which you should, because it is good on far more than corn.
Grill or Oven
First, Blanch the Corn
Shuck the corn and remove every strand of silk. Drop the ears in boiling water for around 3 minutes and take them out. This pre-cooks the corn, so it finishes faster and more evenly whether it goes on the grill or in the oven, and the kernels stay juicy while the glaze does its work outside.
On the Grill
Coat the corn with the sauce and put it straight on the grill. Turn the ears often and keep coating them with sauce at every turn. You are building up a lacquer, layer by layer, and the edges should caramelize in spots without blackening all over. Watch it closely: a sugar-bearing glaze goes from glossy to burnt in the time it takes to check your phone.
In the Oven
No grill? Preheat the oven to 400 degrees and cook for around 20 minutes. The time varies with the size and type of corn, so treat 20 minutes as the neighborhood, not the law. Turn and coat with sauce often, at least 3 times, and take care not to undercook or overcook it.
The Japanese Cooking 101 video below shows the same method on a stovetop grill pan, which is a third option for a rainy day:
Once the corn is ready, butter at the table is fine, and I think it goes very well with this recipe. I would not add salt, since the soy sauce provides more than enough. Oishii desu ne? That means, it is delicious, is it not? Dozo meshiagare (どうぞ召し上がれ), pronounced doe-zoe mesh-ee-ah-gah-ray: bon appetit.
Watchdog Approved
Winston’s Pick, Winston says grilled corn is one of life’s great pleasures, and he expects the humans to share.
S&B Assorted Chili Pepper (Shichimi Togarashi)
The authentic Japanese seven-spice blend the recipe calls for, once you try it, you’ll never reach for plain pepper again.
Takara Mirin Gourmet Seasoning Sake, 700ml 2-Pack
Japan’s best-known mirin brand, the sweet rice seasoning that gives the sauce its signature shine.
AUGSUN Corn on the Cob Holders, 10-Pack
Stainless-steel skewer grips that keep buttery fingers, and burnt thumbs, out of the equation.
As an Amazon Associate, we earn from qualifying purchases.
Real Teriyaki Sauce Variation
If you are feeling more adventurous, add a little oomph to the sauce and take it to the next level with a real teriyaki sauce. It tastes great on this corn, and on just about any other vegetable, steak, chicken, or seafood you can bake or grill.
To the basic sauce above, simply add 1/4 cup sake, 2 tablespoons sugar, a 1/2 inch piece of crushed ginger, and 2 crushed garlic cloves. Cook on the stove for 5 to 8 minutes over low heat after it starts to boil. You can add a dash of cornstarch if you prefer your sauce thickened; just dissolve the cornstarch in a little water or soy sauce before you add it to the pot, or it will clump. What you get is a genuine teriyaki sauce, far better than the imitation sauce you thought was teriyaki at restaurants.
Frequently Asked Questions
What is mirin, and what can I use instead?
Mirin is a sweetened Japanese rice wine made for cooking. It gives the glaze its shine and gentle sweetness. If you cannot find it, dry sake with a pinch of sugar stirred in is the closest substitute. Sweet cooking wines labeled aji-mirin are seasoned mirin-style products and work fine here too.
Can I make yaki tomorokoshi without a grill?
Yes. The oven method above, 400 degrees for about 20 minutes with frequent turning and basting, is the one I use most in winter. A stovetop grill pan works as well, as the video shows. What matters is the repeated basting, not the heat source.
Is this recipe gluten free?
Not as written. Regular soy sauce is typically brewed with wheat, so anyone cooking for a gluten-free table should swap in a tamari labeled gluten free and check the mirin label as well. The corn, the method, and everything else stay exactly the same.
How far ahead can I make the sauce?
Days ahead, easily. The soy and mirin glaze keeps in a sealed jar in the refrigerator for at least a week, and the teriyaki variation keeps just as well. Make a double batch: it is as good brushed on grilled zucchini, eggplant, or chicken thighs as it is on corn.
What else does shichimi togarashi go on?
Almost anything savory that wants warmth without a burn: noodle soups, fried eggs, grilled meats, roasted potatoes, and the cold soba noodles in my soba recipe. One small tin lives by my stove year-round.
The Bottom Line
The Bottom Line: Two-ingredient glaze, three-minute blanch, twenty minutes of turning and basting. That is the entire technique, and it produces the best corn on the cob I have ever eaten, at home or at a festival in Japan. The recipe has not needed changing since I first posted a version of it in 2014, which tells you something.
Worth it if: you grill corn more than twice a summer, or you have eaten corn the same boiled-and-buttered way for decades and want one new trick that actually earns its place. It pairs naturally with the other Japanese flavors on this site, from cold soba to a handful of homegrown shiso chopped over the top.
Not worth it if: you want a set-and-forget side dish. The basting is the recipe, and it keeps you at the grill for the full twenty minutes. If that sounds like work instead of pleasure, boil your corn, butter it well, and nobody here will judge you. Much.
So here is my question for the comments: what is the best thing that ever happened to an ear of corn in your kitchen or on your grill? A family method, a street vendor somewhere, a sauce I have never heard of? Tell me below, because I have been grilling corn this way for years and I am always willing to be outdone.
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