these noodles are the real Korean deal. they are easy to make and will give you authentic chapchae noodles if you throw in some vegetables and a little sauce. I could eat this stuff all day. Despite the name "sweet potato" as the only ingredient, they can have enough fiber to lower the net carbs/glycemic load. I laugh at the miniscule serving size (17 per bag!) they have that seems geared to western people who don't love this stuff. I saw a more realistic serving size on a different package: lets just say that I consider the two 12 oz. bags included in the package I bought to hold 4 servings of 3 oz each, or 8 servings for the two bags. Since their serving size is 70 calories, I figure mine is a bit more than 280. But since I usually make them as a vegetarian dish, and minimize the fat I add (a tablespoon of sesame oil is enough to fry 3 dry oz. in), adding celery, bean sprouts, spinach, a little grated or thinly sliced carrot, maybe kimchee, and some sesame seeds, a big satisfying bowl of it is still probably well under 350 calories, and I feel totally sated. The noodles are chewy enough that you get a lot of satisfaction from them. They're not virtually net-carb-free like shiritaki/konnyaku noodles, but they're also not as challenging as those to infuse with delicious flavor and, more to the point, chew and swallow.I prefer to get these noodles made in korea as opposed to china ( they are also available from japan, but usually at a higher price), and these meet that criterion. I am a happy chap-chae-er now.