Step 1

Bring a large pot of water to a boil. Season water with salt then add noodles and cook 1 minute less than specified by package instructions. Reserve 1 cup noodle cooking water; drain noodles and add back to pot.

Step 2

Add onion, gochujang, hoisin, lime juice, toasted sesame oil, garlic, ginger and ½ cup reserved noodle cooking water to a blender. Blend on high until completely smooth, about 1 minute.

Step 3

Pour sauce into pot with noodles and toss gently to coat. Place over medium-low heat and cook just until warmed through. Adjust consistency with addition pasta cooking water as needed; season with salt and pepper to taste.

Step 4

Serve with cilantro and a drizzle of toasted sesame oil.