This japchae recipe is a Korean dish full of bouncy glass noodles with an array of colorful vegetables and tender ribeye. You’ll want to make a large batch of this banchan so that you can keep it for leftovers because it’s such a filling dish.
Combine all the seasoning ingredients until fully incorporated and set aside.
In a small bowl, combine the beef and soy sauce. Mix until all the meat is fully coated in the soy sauce and set aside.
Spinach
Boil a large pot of water over medium-high heat. Add the spinach and cook for about 1 minute or until the spinach wilts.
Remove the spinach from the water and onto a strainer. (Do not discard the boiling water because you will need this to boil the noodles.) Place the spinach under running water until it’s cool to the touch. Turn off the faucet and use your hands to gently squeeze out the excess water from the spinach.
Add the spinach into a small bowl and mix in the soy sauce and sesame oil. Set aside.
Noodles
In the same pot of boiling water, add the sweet potato glass noodles and follow the packaging instructions. On my package of noodles, I boil them for 10 minutes and then remove them.
Strain the noodles and add them into a large mixing bowl.
Season them with the sesame oil. Mix until all the noodles are coated to prevent them from sticking.
Use a pair of scissors to cut the noodles into manageable strips. I like to cut them into about 6 inch strips, but you can cut them how long you want them. This will make the noodles easier to handle and eat since they are so long.
Other vegetables & assembly
Onions & green onions: In the same saute pan over medium heat, add a little oil if necessary and add the yellow onion. Cook for about 3 minutes or until the onions begin to soften, but not become translucent. Add the green onions and cook for an additional 2 minutes or until the green onions begin to wilt. Transfer the onions and green onions into the mixing bowl with the noodles.
Carrots & red bell peppers: In the same saute pan, add a little oil if necessary and add the carrots and red bell peppers. Cook for about 2 minutes or until both carrots and bell peppers are softened to your liking. Transfer to the noodle bowl.
Optional egg garnish (jidan): Crack the egg and separate the egg yolk and the egg white. Lightly beat the egg yolk. On a saute pan over medium heat, add a small amount of vegetable oil and add the beaten egg yolk. Cook until it becomes opaque and transfer to a cutting board. Roll up the omelette and cut it into very thin strips. Set aside.
Mushrooms: In the same saute pan, add a little oil if necessary and add the mushrooms. Cook for about 3 minutes or until the mushrooms are softened and brown. Transfer to the noodle bowl.
Garlic & meat: In the same saute pan, add a little oil if necessary and add the garlic. Cook for about 30 seconds or until it becomes fragrant. Add the marinated meat and cook for about 2 minutes or until the meat is browned and opaque. Transfer to the noodle bowl.
Whisk the seasoning once more before adding it into the noodle bowl. Mix all the ingredients and the noodles in the bowl until everything is fully coated in the seasoning. Taste test the japchae and add more seasoning or salt if you prefer.
You can chill it in the fridge before serving or eat immediately.