Question: what is the nutritional content of rhubarb?
Answer: Nutrition Info One cup of uncooked rhubarb contains 26 calories, 1.1g of protein, 0.2g of fat, 5.5g of carbohydrates, 2.2g of fiber, and 1.3g of sugar. Rhubarb offers lots of vitamins and minerals. It's a very good source of vitamin C, vitamin K, potassium, and manganese.