New here? This is a Menu Deep Dive: one Korean main dish per article. If a Korean menu still reads as a wall of words, start with the menu decoder, and if you want the story of one family learning all of this from nothing, start at Part 1 and Part 2. Last time in this series we covered mandu. Since then, the banchan series closed its article on dubu-jorim by promising this bowl: the soup a kitchen sends out with no salt in it at all.
Recipes vary by restaurant and household. When it matters, ask.
Most soup in an American restaurant is finished before it leaves the kitchen. Somebody back there tasted it. The salt is already in.
This one is not.
It arrives still boiling, in a heavy black earthenware bowl. The broth is white, the white of milk. Thin slices of beef sit under the surface, with a coil of fine noodles. Rice comes beside it in its own stainless steel bowl, with two kinds of red kimchi.
And on the table sit the things the kitchen held back. Salt. Ground black pepper. A heap of chopped scallion, more than the pinch the kitchen may have put on top.
You take the first spoonful. It tastes of beef broth that nobody has salted.
Somebody spent most of a day on that broth. Then they saved the last call for you.
The dish is seolleongtang (설렁탕), Korean ox bone soup. The salt was left out on purpose. The kitchen is giving you the choice, as a courtesy. This article is about that choice, and why it is yours.
What is seolleongtang?
Seolleongtang is Korean ox bone soup. Beef bones and beef are boiled for many hours until the water turns milky white. It arrives very hot and unseasoned, usually with thin wheat noodles and sliced beef already in the bowl, rice on the side, and kkakdugi, cubed radish kimchi, beside it. You add salt, pepper and scallion yourself. It is not spicy. On American menus it is also spelled sul lung tang or sullungtang.
What is the difference between seolleongtang and gomtang?
The textbook answer is bone. Seolleongtang is boiled from ox bones and head meat, which is what turns it white. Gomtang is boiled from cuts of meat such as brisket and shank, and comes out clearer. In practice the line has blurred. One Korean food writer said telling the two apart no longer means much. These days gomtang is usually the clear one. If you can see into the bowl, it was made the meat way.
Why is seolleongtang white?
Because the bones are boiled hard, for a long time. Cooks who write recipes for it agree that a gentle simmer keeps a beef broth clear and a steady boil turns it milky. The usual explanation is that fat and protein break into droplets small enough to stay suspended in the water, where they scatter light. Milk is white for the same reason. That has been measured on chicken bones, not beef. No milk or cream goes into the standard recipe.
Why is seolleongtang served without salt?
So that each person can season it to their own taste. That is the reason Korean reference books and Korean cooks give most often, and it is the standard custom. A writer for the Michelin Guide's Korean edition adds another: kitchens confident in their broth leave it unsalted because an unsalted broth cannot hide the quality of the beef. Either way, the salt on the table is there for you, to use as you like.
How do you eat seolleongtang?
Taste one spoonful plain. Then add salt a little at a time, tasting as you go. Black pepper and chopped scallion are up to you, in any order and as much as you like. One Korean food writer's suggested order is the noodles and meat first, then the rice tipped into the broth. Eat kkakdugi alongside. If the broth starts to feel heavy, some people pour a little of the kkakdugi's liquid into the bowl, and some never do. That liquid contains fish and shellfish.
-TANG 탕 A tang is a soup promoted to the main event, and this one reaches the table without its salt. Read the whole decoder.
What is Seolleongtang?
The noodles are called somyeon (소면).
The broth takes time you never see. Korea's agricultural research agency puts it at twelve to twenty-four hours of boiling in a restaurant, against five or six in a home kitchen. That is somebody's whole day, spent before you sat down.
So seolleongtang is mostly eaten out. Koreans usually get it at a seolleongtang shop, a restaurant built around this one soup. For the real thing, go to one of those shops.
It belongs to the same family as galbitang, the clear short-rib soup. The two sit at opposite ends of it. Galbitang is made so you can see the bottom of the bowl. Seolleongtang is made so you cannot.
Most Korean dish names break into parts. This one does not. Where it came from is argued over and not settled. This article leaves it there. What matters at the table is the spelling on a menu. In America it varies: seolleongtang, sul lung tang, sullungtang, seolleong tang. Same bowl.
And it almost never arrives alone. Kkakdugi, the cubed radish kimchi, is its standard partner. A webzine from the Korean government's overseas culture office calls it the soup's inseparable side dish. Cabbage kimchi usually comes too. You do not order either one. Both come with the soup, included in the price, and you can ask for more.
Why It Is White
It looks like cream. It is not. No dairy goes into the standard recipe at all. The color comes out of the bones.
Cooks who write recipes for this soup agree on one condition. Simmer beef bones gently and the broth stays clear. That is how galbitang is made. Keep them at a hard, steady boil and the water turns white.
What the boiling does is probably this. Fat and protein from the bone break up into droplets too small to see. The droplets stay suspended in the water instead of rising to the top. Suspended droplets scatter light, which is also why milk is white.
That process has been measured in a laboratory, on chicken bones. This blog could not find the same study done on beef. So: probably.
Whiter is not better, either. For a period, some Korean restaurants were caught whitening their broth with powdered milk, or with the non-dairy creamer people stir into instant coffee. Diners stopped trusting the color.
One Korean food writer described a turn after that, toward clearer broth. The Michelin Guide's current Seoul list still describes one style, from the Mapo district, as clear rather than milky. A bowl less white than you expected is not a weaker bowl. It may simply be made that way.
Why the Kitchen Will Not Salt It
This blog's family story has a Chuseok table in Ohio. On it was a pale beef and radish soup. Soo-jin ladled some out for Bob Miller. He looked into it.
"There's no soy sauce in it."
"There is. It is the other one."
The other one was the pale kind, picked so the broth would stay clear. That kitchen seasoned its soup, and chose the seasoning to protect the color.
A seolleongtang kitchen goes further. It does not season at all.
The reason given most often is the plainest one. Everybody salts to their own taste. Korean reference books say so, and so do Korean cooks and people who write about the soup in English.
The old Seoul soup houses in Korea's national encyclopedia already worked that way. Diners added finely cut scallion, salt, chili powder and black pepper themselves. A Korean-American cook puts it in one line. The soup is supposed to arrive unseasoned, so each person can season it to their liking.
A writer for the Michelin Guide's Korean edition offers a second reason. It is that writer's reading, not a rule. Kitchens confident in their broth leave it unsalted, the argument goes. An unsalted broth has nowhere to hide. All you can taste is the beef, so the beef had better be good.
Either way, the first spoonful is not the taste the bowl is meant to end with. The kitchen leaves that part to you.
The salt itself varies. Many houses keep coarse crystals in a small crock on the table. Others set out fine salt, or a shaker. At least one Seoul house roasts its own for the table.
Seolleongtang vs. Gomtang
On a Korean menu you will often find gomtang (곰탕) next to seolleongtang. The textbook difference is one word: bone.
Seolleongtang is boiled from ox bones and head meat, and the bones are what turn it white. Gomtang is boiled from cuts of meat, brisket and shank, without the bones, so it comes out clearer. That is the definition the Michelin Guide's Korean edition gives.
In a real restaurant the line has worn thin. A later piece in the same guide, a few years old now, said many seolleongtang kitchens had started making their broth the gomtang way, clearer. Telling the two apart, it said, had stopped meaning much. Gomtang, for its part, now tends to be the clear one. A Korean newspaper reported recently that clear gomtang has caught on with younger diners. If you order one and the bowl looks like the other, nobody got your order wrong.
This article could not confirm that every gomtang kitchen leaves the salt to you the same way. If the salt is on your table, it is there for the same reason.
The rest of a seolleongtang shop's menu is short and mostly beef. Suyuk (수육) is sliced boiled beef on a plate. Most of these shops have it. You may also see dogani-tang (도가니탕). Dogani is the ox's kneecap and the meat attached to it, and one Korean newspaper counts the tendon around it too. It is chewy.
The bowl marked teuk, the special, is the upgrade. At one of Seoul's oldest soup houses it means tongue and head meat go in as well. Some chains also sell a spicy version as a separate menu item. The plain bowl is the one to order first.
How to Eat Seolleongtang
Taste it before you touch the salt. A spoonful of the plain broth comes first. Then salt, a little at a time, tasting in between. You cannot take it back out.
Writers describe the broth in different ways. A writer for the Michelin Guide's Korean edition calls the broth savory and nutty, enough that kimchi alone will carry a bowl of rice. A Korean newspaper column calls one old Seoul house's broth clean and light. An American magazine calls it rich.
The bowl will be boiling when it lands. That is the point. A lukewarm bowl is what Korean diners complain about.
Then pepper and scallion, in any order, as much as you like. Think of the garlic powder and red pepper flakes at a pizza place. They sit on the table, and how much goes on is up to you. Salt, pepper and scallion work the same way here. At some houses the chopped scallion sits in a container on the table, and you take it freely. Some kitchens scatter a little on top before the bowl goes out. The scallion is said to cut the fattiness of the broth. Whether or not that is the mechanism, it is the green in the bowl. Nobody counts how much you take.
Leave the rice out at first. It used to arrive already in the soup, warmed in broth before the bowl was filled. Most places now bring it separately. Rice left sitting in broth swells and clouds it. Separate rice also lets you decide how much goes in. A few old houses still serve it in the bowl.
One Korean food writer gives an order. Wrap the noodles around a slice of beef and eat those first. Then tip the rice into what is left. The menu decoder once described a tang bowl as sized for exactly that moment. Eating the rice alongside, a spoonful at a time, is fine too.
Put kkakdugi on every spoonful, and treat its liquid as optional. The kkakdugi article already worked out the mouthful. Rice and hot broth underneath, one cold cube on top.
The liquid in the kkakdugi dish is a separate decision. Some people pour a little into the bowl partway through, when the broth starts to feel heavy. It turns the soup sharper and slightly red. Some houses bring that liquid out in a small kettle for exactly this. Plenty of people never add it at all. If you avoid fish or shellfish, skip this step, because the kimchi is made with fermented seafood.
Take as much kimchi as you want. Some houses leave the kimchi in a small crock on each table, to take as you like. Diners tear it by hand or cut it with scissors.
The kitchen may have matched the kimchi to the broth. One Korean food writer notes the pattern. Houses with a rich, fatty broth ripen their kkakdugi until it is sour. Houses chasing a clear, clean broth serve freshly dressed cabbage kimchi, and keep the radish only lightly sour. The sourer the kimchi on your table, the heavier the soup it was probably chosen for.
If you avoid wheat, look before you eat. The noodles are in the bowl when it arrives. Ask a server whether the soup has gluten. They may think about the broth and say no.
Why This Dish Matters
The bowl in the opening arrived with one decision saved for you. Now it is easy to say why. The bones had most of a day. The kitchen took it as far as white. The salt never went into the pot.
The rest was set next to the bowl, for you to use or not. Salt. Pepper. Most of the scallion.
Halfway down, the broth is not the color it was when it landed. There is black pepper in it now, and green. If you went that way, a little red.
Still to come in the Menu Deep Dives: samgyetang. The menu decoder named three soups to show what a tang is: galbitang, seolleongtang and samgyetang. Galbitang kept its beef broth clear. Seolleongtang boiled its broth white. The third is not beef at all. It is a whole young chicken, stuffed with ginseng and rice, in a bowl of its own. Why one bird to a bowl, why the ginseng, and what you do with a whole chicken once it is in front of you.
If this series is your kind of thing, subscribe. One Korean dish at a time, no guesswork left in the bowl.
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