Japchae(잡채) Recipe (Sweet Potato Glass Noodles)


Japchae was always the dish my family made when guests were coming over. It looks fancy on the table, but honestly? It's pretty forgiving to cook. 

And it's not spicy at all — which makes it a great pick if you're still easing into Korean food.

So, What Is Japchae?

Korean japchae, stir-fried glass noodles with vegetables and beef


                                                             Japchae(잡채)

Japchae is stir-fried glass noodles (made from sweet potato starch, not wheat) tossed with veggies, a little beef, and a savory-sweet soy sauce mix. 

No chili here — it's mild and slightly sweet, which is probably why it shows up at pretty much every Korean holiday and celebration.

What You'll Need (Serves 3–4)

Raw ingredients for Korean japchae — glass noodles, carrots, spinach, and beef


  • 200g dangmyeon (sweet potato glass noodles)
  • 150g beef sirloin, thinly sliced (skip it if you want)
  • 1 carrot, julienned
  • 1 onion, thinly sliced
  • 1 red bell pepper, julienned
  • 4–5 shiitake mushrooms, sliced
  • 2 cups spinach, blanched
  • 3 tbsp soy sauce
  • 2 tbsp sugar
  • 2 tbsp sesame oil
  • 1 tbsp minced garlic
  • Neutral oil for cooking
  • Sesame seeds, for garnish

Want it vegan? Just skip the beef and toss in extra mushrooms or tofu. Works great either way.

Let's Cook

Boil the noodles. 6–8 minutes in boiling water, until chewy but not mushy. 

Drain, rinse in cold water, and snip them a few times with scissors — trust me, this makes eating them way easier. 

Toss with a little sesame oil so they don't stick.

Marinate the beef. 

Just a splash of soy sauce, garlic, and sesame oil while you prep everything else.

Carrots and vegetables being cut and prepped for Korean japchae

Cook the veggies one at a time. 

Yes, separately. It's more dishes, I know, but it's what gives japchae that layered flavor instead of one big mushy stir-fry.


Carrots, spinach, mushrooms, and beef being stir-fried separately for japchae

Cook the beef, blanch the spinach. 

Brown the beef in a hot pan. Blanch the spinach quickly, squeeze out the water, season lightly.

Mix it all together. 

Noodles, veggies, beef, remaining soy sauce, sugar, sesame oil — all into one pan over low heat. 

Toss for a couple minutes so everything gets friendly with each other.

Done. 

Sprinkle with sesame seeds and serve warm, or let it sit and eat it at room temp — both are great.


Glass noodles being tossed with vegetables and beef in sauce for japchae


A Few Tips

  • Don't overcook the noodles — slightly firm is better than mushy.
  • Cooking the veggies separately really is worth the extra pan.
  • Taste as you go. It should lean a little sweet, not salty.
  • Cut those noodles. They're long and unruly otherwise.

Quick FAQ

Can I make it ahead? 

Yep — it actually tastes better the next day, which is why people make it for parties in advance.

Gluten-free? 

The noodles are, but regular soy sauce isn't — swap in tamari if you need it gluten-free.

Leftovers

Keeps in the fridge for about 3 days. 

Reheat gently with a splash of water or sesame oil so the noodles loosen back up.

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