Kalguksu Noodles substitute

Best substitute

Fresh or frozen udon, plus a flour slurry in the broth

Use One 7 oz / 200 g pack for every person, plus 1 tsp flour whisked into 2 tbsp cold water

Best for chicken kalguksu

Close match

Fresh or frozen udon is the closest bite at one 200 g pack per person, but you must add the missing starch back: whisk 1 teaspoon of flour or half a teaspoon of cornstarch into 2 tablespoons of cold water and stir it into the broth. Kalguksu is doing two jobs, and the second one gets missed by every list you will read: because the noodles are boiled straight in the soup without rinsing, their surface flour thickens the broth and turns it slightly milky. Any pre-rinsed or dried noodle leaves you with a thin, watery soup even when the noodle itself is fine.

Other kalguksu noodles substitutes

Ranked, with the exact amount to use

2Fresh jjajangmyeon or Shanghai-style thick wheat noodles
Close match
Use the same amount by weight
Refrigerated thick white Chinese or Korean wheat noodles, sold heavily dusted with flour.
What changes
Best for
kalguksu, any thickened noodle soup
The best swap overall, because these are the same soft non-alkaline wheat dough and, just as importantly, they arrive coated in loose flour. Cook them directly in the broth for three to four minutes and the soup thickens exactly as it should, with no slurry needed. The strands are rounder and thicker than a knife-cut noodle, so the bowl eats a little heartier, but nothing else changes.
3Dried linguine or fettuccine, cooked in the broth
Taste and texture differ
Use 3 oz / 85 g dry for every person
Flat dried Italian pasta, the right cross-section, cooked straight in the soup rather than in a separate pot.
What changes
Best for
supermarket-only cooking, chicken kalguksu, feeding a family
The shape is right and cooking it in the soup rather than in water puts its starch where you want it. Two adjustments matter. It takes nine to eleven minutes instead of four to five, so add an extra cup of broth to cover the evaporation, and it soaks up a surprising amount of salt, so season the soup at the very end rather than at the start. The finished noodle stays firmer and more uniform than a hand-cut one.
4Homemade knife-cut noodles
Close match
2 cups all-purpose flour, ¾ cup water, ½ tsp salt serves 3 to 4
A plain wheat dough kneaded briefly, rested, rolled thin, dusted and sliced by hand.
What changes
Best for
the real dish, when no fresh noodles are sold locally, cooking with children
This is genuinely the answer, because kalguksu is defined by being hand-cut and it is one of the easiest fresh noodles there is. Knead five minutes, cover and rest thirty minutes so the dough relaxes and rolls out without fighting you, roll thin, dust generously, fold into a flat stack and slice a quarter inch wide. Do not shake off the flour, that flour is what thickens the broth. Boil in the soup for three to four minutes.
5Somyeon or somen
Taste and texture differ
Use 3 oz / 85 g dry for every person
Very thin white wheat noodles, cooked separately and added to the bowl.
What changes
Best for
a lighter bowl, when only thin noodles are available, quick weeknight soup
Easy to find and pleasant, but much thinner and softer, so the bowl loses the substantial chew that makes kalguksu satisfying. They also disintegrate if left simmering, so cook them separately for two to three minutes, rinse, and put them in the bowl before ladling the soup over. Because you rinsed them, add the flour slurry to the broth or the soup will taste thin against such delicate noodles.
6Plain ramen noodle blocks (least-good option)
Taste and texture differ
Use One 3 oz / 85 g block for every person, seasoning discarded
Instant noodle bricks used when there is nothing else in the cupboard.
What changes
Best for
emergencies only
Available everywhere and the weakest choice here. Kalguksu noodles should be soft and floury, and instant blocks are the opposite: alkaline, springy and snappy, which reads as a completely different dish. The frying oil they carry also floats on top of a clean anchovy or chicken broth and dulls it. If it is all you have, discard the sachet, cook the block in the broth, and skim the surface before serving.

What is Kalguksu Noodles?

Kalguksu Noodles is Kalguksu noodles are fresh Korean wheat noodles cut by knife into flat, slightly irregular strips about the width of linguine, sold refrigerated under a heavy coat of dusting flour and boiled directly in the soup they are served in.

Cooking tips

Do not rinse kalguksu and do not cook it in a separate pot of water. Boiling the noodles directly in the broth is the recipe rather than a shortcut, because their surface flour is what gives the soup its slightly milky body.
If you have to use a rinsed or dried noodle, whisk 1 teaspoon of flour or half a teaspoon of cornstarch into 2 tablespoons of cold water and stir it into the simmering broth. That one step is the difference between a proper kalguksu and a bowl of noodles in stock.
Season the soup at the very end. Fresh noodles carry salt in the dough and shed it into the broth as they cook, and a soup salted before the noodles go in almost always ends up too salty to fix.
The classic broth is dried anchovy and kelp. If you have no anchovies, a light chicken broth simmered with a four-inch piece of kombu for ten minutes and finished with a splash of fish sauce gets you convincingly close.
Kalguksu does not keep. Cook only what you will eat in one sitting, because leftover noodles drink the broth overnight and turn the whole thing into a thick paste that cannot be loosened.

Frequently asked questions

Can I use udon for kalguksu?

Yes, udon is the closest widely available noodle on chew and thickness, and it is what most people should reach for. The one thing to fix is the broth. Udon comes pre-washed, so it does not shed the surface flour that normally thickens kalguksu soup, and your bowl will taste thinner than expected. Whisk a teaspoon of flour or half a teaspoon of cornstarch into two tablespoons of cold water and stir it into the simmering broth, and the texture comes right.

Are kalguksu noodles the same as Chinese knife-cut noodles?

They are close cousins rather than the same thing. Both are plain wheat dough cut with a blade rather than extruded, and both are soft rather than springy because neither uses alkaline salts. Chinese knife-shaved noodles are generally thicker in the middle with tapered edges, which gives a chewier, more uneven bite, while kalguksu is rolled flat and cut into even ribbons. Chinese knife-cut noodles work very well in kalguksu soup and need no adjustment.

Can I use spaghetti for kalguksu?

Linguine or fettuccine are better choices than round spaghetti, since kalguksu is a flat noodle, but any of them will make a decent soup. The trick is to cook the dry pasta directly in the broth rather than in a separate pot, which puts its starch into the soup where it belongs. Add an extra cup of broth because the pasta takes nine to eleven minutes and drinks a lot of liquid, and hold back the salt until the end because pasta absorbs it greedily.

Do I rinse kalguksu noodles?

No, and this is the most important thing to get right. The heavy dusting of flour on fresh kalguksu is deliberate: it dissolves into the broth and gives the soup its characteristic slightly cloudy, silky body. Rinsing washes that away and leaves you with a thin, watery soup. The only time to rinse is if the noodles are very heavily caked and you want a lighter broth, in which case rinse briefly and expect to add a flour slurry back.

Can I make kalguksu noodles from scratch?

Yes, and it is worth doing because the dough is just flour, water and salt and the noodles are supposed to look hand-cut and uneven. Knead 2 cups of all-purpose flour with three quarters of a cup of water and half a teaspoon of salt for about five minutes, cover it and rest for thirty minutes, then roll it thin, dust it generously with flour, fold the sheet into a flat stack and cut quarter-inch strips. Do not brush off the flour before cooking, and boil them straight in your broth for three to four minutes.

Related substitutes

More pasta & noodles substitutes

Kalguksu Noodles substitute

Other kalguksu noodles substitutes

2Fresh jjajangmyeon or Shanghai-style thick wheat noodles

3Dried linguine or fettuccine, cooked in the broth

4Homemade knife-cut noodles

5Somyeon or somen

6Plain ramen noodle blocks (least-good option)