“Japan’s Biggest Imoni (Taro Stew) Party”: Excavator Stirs 3.2 Tons of Taro in a Giant Pot — Yamagata City

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The story

Yamagata City’s annual “Japan’s No. 1 Imoni Party” was held on the riverbank, where about 30,000 servings of imoni (a taro stew) were made in “Nabe Taro III,” a giant pot 6.5 meters in diameter. The ingredients included 3.2 tons of Yamagata-grown taro, 1.2 tons of beef, and 3,500 negi (long green onions), plus equally massive amounts of seasonings — 700 liters of soy sauce, 200 kg of sugar, and more. What caught fire on the forum thread was the hygiene of the large excavator used to stir the pot, with posters offering conflicting claims like “the bucket is custom-made, unpainted stainless steel,” sparking debate. The thread also branched into a regional comparison of imoni recipes — Yamagata’s version uses soy sauce and beef, while Miyagi’s is closer to a miso-based pork soup — with each Tohoku prefecture having its own take.

An event called “Japan’s No. 1 Imoni Party,” where the Yamagata regional dish “imoni” (taro stew) is cooked in a massive pot, was held on the riverbank in Yamagata City and drew large crowds.

“Japan’s No. 1 Imoni Party” is an autumn tradition in Yamagata, held every year on the riverbank in Yamagata City, where imoni is cooked in a giant pot 6.5 meters in diameter named “Nabe Taro III.”

On the 20th, to make about 30,000 servings of imoni, organizers prepared 3.2 tons of Yamagata-grown taro, 1.2 tons of beef, and 3,500 long green onions, along with seasonings including 700 liters of soy sauce and 200 kg of sugar.

Source: news.web.nhk / Original article here

What people said

3AnonymousSep 20, 2026 16:51
I'm a bit worried about the hygiene here.
8AnonymousSep 20, 2026 16:52
Re: #1
Stirring it with industrially painted equipment is gross.
16AnonymousSep 20, 2026 16:56
Re: #3
So are you also going to complain about the Self-Defense Force's field-kitchen shovels?
107AnonymousSep 20, 2026 17:21
Re: #3
They wash the brand-new excavator with dish soap and coat it with cooking oil before using it for the stew.
189AnonymousSep 20, 2026 17:58
Re: #3
Re: #8
Saw this on TikTok yesterday — they disassemble and clean a brand-new one,
and use margarine instead of grease.
5AnonymousSep 20, 2026 16:51
I'd rather have tonjiru (pork miso soup)
Or failing that, chicken-salt chankonabe

Plain vegetables alone sounds rough.
113AnonymousSep 20, 2026 17:24
Re: #5
Taro's the whole point, though
You don't put taro in tonjiru
There's something nice about really savoring taro on its own.
171AnonymousSep 20, 2026 17:48
Re: #5
The Yamagata version has beef in it, you know.
243AnonymousSep 20, 2026 18:21
Re: #5
There's meat in it.
23AnonymousSep 20, 2026 16:57
Hmm…
Aren't they injecting grease into the moving parts?
28AnonymousSep 20, 2026 16:59
Re: #23
Of course — butter and cooking oil for that part.
29AnonymousSep 20, 2026 16:59
Re: #23
I think I saw somewhere before that they use salad oil.
43AnonymousSep 20, 2026 17:02
Re: #23
Actually, they use cooking oil.
The excavator used is brand new, and afterward it gets auctioned off, selling for a premium as a lucky charm.
31AnonymousSep 20, 2026 16:59
Never had authentic imoni before
Is it sweet?
But it looks tasty with all that green onion in it.
72AnonymousSep 20, 2026 17:12
Re: #31
When I lived in Yamagata, I got invited to an imoni party thrown by friends, not the official event — it was delicious.

Actually, apparently every Tohoku prefecture has similar events, each with its own character, and they're all supposed to be good.
83AnonymousSep 20, 2026 17:15
Re: #31
Is this the season Tohoku folks get restless?

Yamagata's is beef with a soy-sauce base, a little sweet.
Miyagi's is closer to tonjiru (though locals get mad if you call it that).

But there's also something great about making it outdoors on a nice day and eating it together while chatting.
37AnonymousSep 20, 2026 17:00
Tohoku food seems like it'd be pretty salty.
45AnonymousSep 20, 2026 17:03
Re: #37
It's the soy sauce that's different.
Kansai people often say Kanto soy sauce is salty, but Tohoku's is even saltier.
68AnonymousSep 20, 2026 17:10
Re: #45
When I moved to Kagoshima, the supermarket had something like 30 kinds of soy sauce, but every single one was sweet — I was in agony. Eventually found
a Noda-made soy sauce (Noda being Kikkoman's hometown) at a 7-Eleven and was saved.
98AnonymousSep 20, 2026 17:18
Re: #45
Depending on where you are, Kanto soy sauce can actually be way saltier. Kanagawa's is a good example.
82AnonymousSep 20, 2026 17:15
We scrubbed the giant pot with a deck brush
87AnonymousSep 20, 2026 17:16
The moment they put industrial paint on the bucket, it's a no-go.
103AnonymousSep 20, 2026 17:20
Re: #87 Is this bucket custom-made? It's not in any catalog, and it's thin stainless steel.
105AnonymousSep 20, 2026 17:20
Re: #87
The bucket is a custom, all-stainless-steel piece.
No paint on it at all.
108AnonymousSep 20, 2026 17:22
Re: #103
Re: #105
They really thought this through!
247AnonymousSep 20, 2026 18:23
Re: #103
Their approach to imoni is almost too clean.
111AnonymousSep 20, 2026 17:23
Never tried it, but what's it close to — tonjiru with the pork swapped for beef?
120AnonymousSep 20, 2026 17:25
Re: #111
Same here, never had it, but I'd guess it's closer to kenchinjiru.
Actually, is kenchinjiru even a regional dish?
175AnonymousSep 20, 2026 17:50
Re: #120
Oh, it's soy sauce-based!
Then I guess it's like kenchinjiru with beef.
174AnonymousSep 20, 2026 17:49
If there's food to spare, feed it to the athletes stuck with that garbage-tier meal at the Asian Games, Japan
203AnonymousSep 20, 2026 18:05
Re: #174
Giving people from Asia a taste of Kanto food… (trails off, implying it's bad)
184AnonymousSep 20, 2026 17:52
They should invite welfare recipients from across the country for free
Transportation costs included, of course.
199AnonymousSep 20, 2026 18:02
Re: #184
Feeding Kanto food to people west of Kanto would basically be abuse.
211AnonymousSep 20, 2026 18:08
Re: #184
Please donate 700 yen per bowl of imoni as a sponsorship fee.
Reserved seating is 4,500 yen for all-you-can-eat imoni.
Kids are 2,200 yen.
196AnonymousSep 20, 2026 18:00
214AnonymousSep 20, 2026 18:09
Nice



222AnonymousSep 20, 2026 18:12
Re: #214
Is the competition really just about pot size?
I'd rather they competed on flavor.

Background and key points of this discussion

“Japan’s No. 1 Imoni Party” is an annual autumn tradition held on the banks of the Mamigasaki River in Yamagata City, famous for the spectacle of a giant excavator stirring a massive 6.5-meter-diameter pot called “Nabe Taro III.” The biggest point of disagreement on the thread was the hygiene of the excavator’s bucket: some worried that “stirring with an industrially painted bucket is gross,” while multiple replies countered that “the bucket is custom-made, unpainted stainless steel” and that “a brand-new machine is cleaned and coated in cooking oil.” The article alone doesn’t settle which account is accurate, but the event isn’t a one-off — it’s run annually for years with no reported history of food-poisoning issues. Another thread of discussion compared regional versions of the dish across Tohoku — Yamagata’s soy-sauce-and-beef version versus Miyagi’s miso-based, pork-soup-like version — with each prefecture having its own take on ingredients and seasoning. That’s a separate topic from the safety of the imoni itself, and it grew into a casual side conversation about regional food culture.

※This article is excerpted and summarized from the 5ch (News Express+) thread ““Japan’s No. 1 Imoni Party” Preps 3.2 Tons of Taro — Excavator Also Makes an Appearance — Yamagata City.”

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