Authentic Korean Japchae Recipe (Sweet Potato Noodles)

Ingredients

• 600g bone-in beef short ribs (300g boneless)
• Or 300g boneless beef short ribs
• Or 300g scotch fillet/ribeye steak
• 2 teaspoons soy sauce
• 2 teaspoons white sugar
• 2 teaspoons minced garlic
• 1/2 teaspoon black pepper
• 1/4 cup soy sauce
• 1/2 teaspoon minced garlic
• 1 1/2 tablespoons sesame oil
• 1/2 teaspoon salt
• 250g sweet potato noodles (dangmyeon)
• 4 tablespoons vegetable oil
• 1 onion, sliced into wedges
• 3 green onions, cut into 2-inch lengths
• 200g fresh shiitake mushrooms, sliced
• 2 carrots, cut into batons
• 1 red bell pepper, sliced
• 4 1/2 cups baby spinach
• 2 tablespoons white sesame seeds