Can water bamboo and string beans be eaten together?

Jun 26, 2025 Source: Cainiu Health
Dr. Yu Yongchao
Introduction
Under normal circumstances, water bamboo shoots (jiaobai) and string beans (doujiao) can be eaten together, but should be consumed in moderation. It is important to note that the string beans must have their tips and豆筋 (fibrous strings) completely removed, washed thoroughly, and then cut into sections or diagonal pieces. The water bamboo shoots should be peeled and cut into similarly sized slices or strips to ensure even heating during stir-frying. Because string beans contain saponin and plant hemagglutinin, they must first be blanched or thoroughly cooked over medium heat until fully done.

Generally speaking, water bamboo shoots (jiaobai) and string beans (doujiao) can be consumed together, but moderation is advised. Detailed explanations are as follows:

Water bamboo shoots are rich in dietary fiber, B-complex vitamins, and minerals such as potassium and phosphorus. String beans contain high-quality plant protein, vitamin C, folic acid, and minerals like calcium and iron. When consumed together, they complement each other nutritionally: the crisp and refreshing texture of water bamboo shoots contrasts well with the tender chewiness of string beans, enhancing the overall flavor profile. Both are high-fiber, low-calorie vegetables; dietary fiber aids intestinal motility and digestion, while vitamins and minerals provide essential nutritional support. Additionally, the plant protein in string beans, combined with carbohydrates from water bamboo shoots, forms a more balanced nutritional profile, making this combination suitable for daily energy and nutrient intake. Their light preparation also places minimal burden on the gastrointestinal system.

However, attention should be paid to preparation methods. String beans must have their stem ends and fibrous strings completely removed. After washing, they should be cut into sections or diagonal pieces. Peeled water bamboo shoots should be sliced or cut into similarly sized strips to ensure even cooking. Because string beans contain saponin and plant lectin (phytohemagglutinin), they must be fully cooked—either by blanching first or stir-frying thoroughly over medium heat—to prevent food poisoning caused by undercooking. Water bamboo shoots can be added when the string beans are nearly cooked to preserve their crispness and tenderness.

When consuming, portion control is important to avoid excessive intake of high-fiber ingredients, which may cause bloating. Additionally, freshness should be ensured, and spoiled or deteriorated water bamboo shoots or string beans should be avoided to prevent adverse health effects.