1. Soak the sea kelp in mineral water and set aside. 2. Soak the dried seaweed cuts in cold water for 10-15 minutes. Drain and squeeze out the excess water. Cut to smaller size if needed. 3. Place the seaweed in a large bowl, add the soy sauce for soup, sugar, vinegar, garlic, chili flakes, and sesame seeds; Mix well. 4. Add the cucumber and green onion to the seaweed mixture. Pour the sea kelp stock and mix well. Taste and adjust seasoning for your liking.