Bibim guksu is a refreshing, spicy, sweet-and-tangy Korean cold noodle dish tossed with gochujang sauce, crisp cucumber, kimchi and thin somen wheat noodles.
Bring a large pot of water to a boil and cook the noodles according to package directions, about 2 minutes.
Drain noodles into a colander, rinse under ice cold water, drain again and toss with a drizzle of sesame oil to prevent sticking.
Make the sauce:
In a small bowl, whisk together gochujang, rice vinegar, soy sauce, sugar, sesame oil, minced garlic, and gochugaru until smooth.
If the sauce is too thick, add a splash of water to loosen. Set aside.
Assemble:
Toss the cold noodles with the sauce until evenly coated. Traditionally, it is tossed using your hand. (You can wear food-grade plastic gloves to do this).
Divide into bowls, then top with cucumber, kimchi, and half of a boiled egg.