Korean Sweet Potato Noodles (Japchae)

Details

Ingredients

• ¼ cup soy sauce
• 4 teaspoons mirin (Japanese sweet wine)
• 1 tablespoon sesame oil
• 2 cloves garlic, minced
• 1 teaspoon ground black pepper
• 1 pound flank steak, sliced across the grain
• ¼ tablespoon soy sauce
• 2 tablespoons honey
• 1 tablespoon sesame oil
• 1 pinch ground black pepper
• 8 ounces Korean sweet potato noodles (dangmyun)
• 1 egg
• 2 cups baby spinach, or more to taste
• 1 teaspoon light olive oil
• 1 large carrot, cut into matchsticks
• ½ onion, sliced