Thunderbird Cheongdamjeom is a healthy-food restaurant in Cheongdam-dong, Seoul. Its menu includes clean Cobb salad, vegan roasted vegetable salad, diet-noodle salmon sobamaki, brown-rice-cake tteokbokki, and meat-substitute dishes. You pay for your order at the counter in advance, and you must return to the counter whenever you add an item. Food and drinks are expensive.