Yes, Miracle Noodle is a legitimate product. It's made from a soluble fiber called glucomannan, which comes from the root of the konjac plant. These noodles are often referred to as shirataki noodles or konjac noodles. They are naturally fat-free and contain no calories because the glucomannan starch they're made of is an indigestible dietary fiber. They also contain no carbohydrates. This makes them a popular choice for many special diets, including Keto, Paleo, Gluten-Free, Grain-Free, Soy-Free, Vegan, Kosher, and Blood Sugar-Friendly diets. However, the texture and taste might be different from traditional pasta, and some people might find them a bit unusual at first. It's recommended to use them with a strong-flavored sauce that will coat the noodles and allow the flavors to soak in.