Clean the cockles thoroughly and purge them in salt water.
Bring water to a boil in a pot, cook the cockles, and remove the shells.
Boil the chewy noodles in boiling water, then rinse them in cold water.
Julienne vegetables such as cucumber, carrot, and cabbage.
Prepare the sauce by mixing gochujang (Korean chili paste), chili powder, sugar, vinegar, minced garlic, and sesame oil.
Place the noodles, cooked cockles, and vegetables in a bowl.
Add the sauce and mix everything well.
Transfer to a serving plate and sprinkle with sesame seeds.