Chanko-nabe is the hearty hot-pot that forms the core of a sumo wrestler’s diet: a communal pot of protein and vegetables, eaten in enormous quantities to build the size and strength the sport demands. Cooked in-house by the junior wrestlers of each stable, it is less a single recipe than a way of eating — endlessly adaptable, genuinely nourishing, and woven into the daily rhythm of training-hall life.
What chanko-nabe actually is
Strictly speaking, “chanko” refers to sumo wrestlers’ food in general, and “chanko-nabe” is the hot-pot version that has become its most famous form. In practice the two terms are used almost interchangeably, and when most people picture the sumo diet they are picturing the pot: a wide vessel set over a burner, filled with stock and packed with whatever the stable has on hand that day.
There is no fixed formula. A base of broth — often a clear chicken or kombu-based stock, sometimes seasoned with soy, salt or miso — carries an abundance of ingredients: cabbage, daikon, mushrooms, leafy greens, tofu, leeks and root vegetables alongside the protein. The flexibility is the point. A cook can stretch it, vary it and adjust it to the season, which is exactly why it suits a household that has to feed a roomful of hungry wrestlers day after day.
Why two legs beats four
The classic version is built around chicken, for reasons part practical, part superstitious. A wrestler wins by staying on his feet; a bout is lost the moment a hand or knee touches the clay. A chicken stands on two legs, while cows and pigs go down on four — so chicken came to be seen as the auspicious protein for fighters who never want to be on all fours. Whether or not anyone takes the omen seriously, the chicken-based pot endures as the traditional centrepiece, with fish, pork and beef versions rotating through the week alongside it.
Who cooks it, and the order around the pot
Cooking chanko is the job of the junior wrestlers. In a sumo stable, or heya, life runs on a strict hierarchy, and kitchen duty sits firmly at the bottom of it. The lower-ranked men rise early, train, and then prepare the meal for everyone in the house, learning the recipes by doing rather than from any written guide. Over time certain wrestlers become known for their cooking, and the skills picked up at the stove can outlast a fighting career.
That seniority carries straight through to the meal. The pot is communal, but the eating is not a free-for-all: the senior wrestlers and the stablemaster are served first, while the juniors who did the cooking wait their turn and take what is left. For a young wrestler this is part of the apprenticeship — you feed the men above you before you feed yourself. The ritual reinforces the chain of respect that holds a stable together, the same structure that, at its summit, produces the sport’s grand champions, or yokozuna.
The routine: train hungry, eat big, then rest
Chanko-nabe alone does not build a sumo body. The pot is one half of a deliberate routine designed to add and hold weight. Wrestlers train on an empty stomach in the morning — hours of demanding practice before anything has been eaten — and only then sit down to a very large midday meal. After eating their fill, they sleep.
The logic is straightforward. Training hard on an empty stomach is thought to drive the body to take in more when the meal finally comes, and a long nap on a full stomach helps the food settle rather than burn off. Eaten this way, in enormous portions and many bowls at a sitting, the same dish that would be a wholesome dinner for most people becomes a tool for gaining mass. It is the combination — hard training, a huge meal, then sleep — that does the work, not any single ingredient.
Nourishing, not just fattening
It is easy to assume that men of such size must be eating badly, but the opposite is closer to the truth. Chanko-nabe is, at heart, a balanced meal: one pot brings together lean and fatty proteins, a generous load of vegetables and tofu, all gently simmered rather than fried, and usually eaten with rice on the side. A wrestler’s size comes from the sheer volume he consumes and the routine around it, not from junk.
That reputation has carried the dish well beyond the training hall. Chanko-nabe is widely enjoyed as a warming winter meal by people who have never set foot in a stable, valued precisely because it is filling and full of vegetables. Wrestlers grow huge on it because of how much they eat and how they live around it — but the food on the table is the kind of thing a dietitian would happily wave through.
From the ring to the restaurant
When a wrestler retires, the cooking he learned as a junior can become a living. Across Japan — and especially in the sumo districts of Tokyo, around the arena where the sport is staged — former wrestlers run chanko restaurants, serving the pot to the public in rooms often decked out with the trappings of their old life. For fans these places are a draw in their own right: a chance to eat the food of the sport, sometimes served by a man who once fought on the dohyo.
A bowl at one of these restaurants pairs naturally with a day at the tournament. If you are planning a trip and want to know how the sport itself works, our guide to watching sumo is a good place to start — and a chanko dinner afterwards is the traditional way to round off the day.
Chanko-nabe is the protein-and-vegetable hot-pot at the centre of the sumo diet, with the chicken-based version traditionally favoured because a chicken stands on two legs.
Junior wrestlers cook it under a strict hierarchy, and the size it builds comes from a routine: train hungry, eat huge, then nap.
It is nourishing rather than simply fattening, and many retired wrestlers go on to serve it at their own chanko restaurants.
Frequently Asked Questions
Is chanko-nabe always made with chicken?
No. Chicken is the traditional favourite — partly because a chicken stands on two legs, an auspicious image for a wrestler who never wants to fall — but stables vary the pot constantly. Fish, pork and beef versions all feature, and the broth changes too. The dish is defined by its format, not by any one ingredient.
Why do junior wrestlers do the cooking?
Stable life runs on seniority, and kitchen duty falls to the lowest-ranked wrestlers as part of their apprenticeship. They cook for the whole house, serve their seniors first, and eat last themselves. Learning to prepare chanko is treated as one of the basic responsibilities of a young wrestler, and the skills can stay with him for life.
Does eating chanko-nabe make you fat?
Not by itself. The pot is a balanced, vegetable-heavy meal — on its own, the kind of healthy food anyone might cook at home. Wrestlers grow large because of how much they eat and the routine around it — hard morning training on an empty stomach, a very large meal, then sleep — rather than because the food is unhealthy.
Can the public eat chanko-nabe?
Yes. Many retired wrestlers open chanko restaurants after their careers end, particularly in Tokyo’s sumo neighbourhoods, and the dish has become a popular winter meal across Japan. You need no connection to the sport to sit down to a bowl — though eating it near the arena, served by a former wrestler, is part of the appeal for many fans.
