Potatoes and string beans are not poisonous when cooked together.
Potatoes and beans cooked together, if the ingredients are not sprouted or spoiled, and to ensure that cooked generally not poisonous, the nutrients between the two will not produce interaction, will not produce lead to poisoning.
Each 100 grams of potatoes contains 77 calories, of which 17.2 grams of carbohydrates, 2.0 grams of protein, 0.2 grams of fat, 0.7 grams of dietary fiber, 0.34 milligrams of vitamin E, 1.1 milligrams of niacin and 342 milligrams of potassium. Potatoes can be used as a staple food to provide calories, while containing some dietary fiber and resistant starch, satiety.
Each 100 seasonal beans contains 15 calories, including 6.0 g of carbohydrates, 2.0 g of protein, 0.2 g of fat, 4.7 g of dietary fiber, 196 mg of potassium and 43 mg of calcium. Moderate consumption can supplement nutrition and maintain the normal physiological function of the human body.
Potatoes and beans cooked together will not produce harm, as long as no allergies can be consumed in moderation. However, it should be noted that the ingredients need to be safe, and the potatoes need to be unsprouted or moldy. And be careful to cook the beans at high temperature to remove the saponin, saponin, trypsin inhibitor, etc., so as not to cause food poisoning.