Raw cassava contains cyanide, which is toxic to ingest, so it is vital to prepare it correctly. In the United States, people grind cassava down to make tapioca, which they eat as a pudding or use as a thickening agent.
In this article, we provide an overview of this vegetable and explain its benefits, risks, and how to prepare it.
What is cassava?
Cassava is a root vegetable. It is the underground part of the cassava shrub, which has the Latin name Manihot esculenta. Like potatoes and yams, it is a tuber crop. Cassava roots have a similar shape to sweet potatoes.
People can also eat the leaves of the cassava plant. Humans living along the banks of the Amazon River in South America grew and consumed cassava hundreds of years before Christopher Columbus first voyaged there.
Today, more than 80 countries throughout the tropics grow cassava, and it is a primary component of the diet of more than 800 million people around the world. It is popular because it is a hardy crop that is resistant to drought and does not require much fertilizer, although it is vulnerable to bacterial and viral diseases.
Cassava is a calorie-rich vegetable that contains plenty of carbohydrate and key vitamins and minerals.
Cassava is a good source of vitamin C, thiamine, riboflavin, and niacin. The leaves, which are also edible if a person cooks them or dries them in the sun, can contain up to 25 percent protein.
However, the cassava root does not deliver the same nutritional value as other tuber vegetables.
Tapioca starch is gaining attention as a source of gluten-free flour to make bread and other baked products that are suitable for people with an intolerance to gluten.
Cassava is a source of resistant starch, which scientists suggest can boost a person’s gut health by helping nurture beneficial gut bacteria. Resistant starches remain relatively unchanged as they pass through the digestive tract.
The nutritional profile of 1 cup of raw cassava is as follows:
- calories: 330
- protein: 2.8 grams (g)
- carbohydrate: 78.4 g
- fiber: 3.7 g
- calcium: 33.0 milligrams (mg)
- magnesium: 43.0 mg
- potassium: 558.0 mg
- vitamin C: 42.4 mg
- thiamine, riboflavin, and niacin
Cassava contains only small amounts of proteins and fats. As a result, people who use cassava as a primary dietary staple may need to eat extra protein or take protein supplements to avoid becoming malnourished.
Since cassava leaves are a source of protein, people in some parts of the world emphasize combining the roots and leaves of the plant to address this concern.
Some health-food stores and supermarkets in the U.S. stock cassava, and people can also find a wide variety of cassava products online.
Due to its cyanide content, people must cook cassava very carefully. Food Standards Australia New Zealand (FSANZ) recommend taking the following steps:
- peeling the cassava root and slicing it
- boiling, baking, roasting, or frying it until it is tender and very well-cooked
- discarding any cooking water
People should also follow these steps when using frozen cassava.
Processed cassava products, such as tapioca pearls and cassava flour, are safe to use without any precooking.
Summary
Cassava is a versatile, flavorful food and an important source of nutrients and energy, particularly in the tropics.
Cassava is similar to yams and taro, and people can use it in similar ways to a potato. It is possible to use tapioca starch to make gluten-free baked goods. As long as people take precautions when preparing it, cassava can be a beneficial addition to the diet.
Scientists are currently mapping the genetic structure of cassava. They hope to be able to use this information to breed superior cassava plants, which have higher nutritional content, make it to market more easily, and are more resistant to disease.
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