Radix Polygoni Multiflori Preparata is processed before being used as medicine, and its color is black.
Therefore, Radix Polygoni Multiflori Preparata is absolutely edible. Radix Polygoni Multiflori Preparata is generally used as a medicine.
Raw Polygonum multiflorum Thunb can only be used under special circumstances, but it can't be used indiscriminately, and it will be poisoned if used improperly.
It is suggested that Radix Polygoni Multiflori Preparata be ground into powder and added with other ingredients, because it is thick and hard, tastes bitter and is not convenient to eat directly. So you can grind it into powder and add it to other ingredients like seasoning. As for the medicinal efficacy of Polygonum multiflorum Thunb, it is needless to mention.