I buy it in the sandwich shop in my suburban office park building, run by a Korean woman. The potatoes are thinly sliced and not cooked to the point of mushiness so the soup has more of a clear broth than creamy consistency. They also don't appear to be browned so they must be added to the broth versus cooked first. Red pepper, with some seeds visible. No other veggies are identifiable so I'm not sure if there is onion/garlic present. Floating on the top of the soup, when served, she puts chopped up breakfast sausage of the same sort served in egg/sausage sandwiches available for breakfast.
How would you make this? So very delicious to the point that I order it even when its in the 90's outside.