Cassava is a starchy root vegetable that grows in tropical regions and serves as a staple food for hundreds of millions of people around the world. The plant looks somewhat like a small tree with long, finger-like leaves, but the valuable part grows underground: thick, brown roots that can be as long as your arm and weigh several pounds.

Originally from South America, cassava now grows across Africa, Asia, and Latin America because it thrives in poor soil and hot climates where other crops struggle. For many families in these regions, cassava provides the main source of calories, much like potatoes do in cooler climates or rice does in other parts of the world.

You can't eat cassava raw because it contains natural toxins, but when properly prepared and cooked, it transforms into a mild, slightly sweet food. People boil it, fry it into chips, or grind it into flour for bread. If you've ever had tapioca pudding or bubble tea with those chewy pearls, you've eaten cassava: tapioca comes from cassava starch.

The plant is remarkably resilient. Farmers can leave cassava roots in the ground for months and harvest them when needed, making it a reliable backup during droughts or hard times. This dependability has made cassava one of the world's most important crops, though it rarely gets the attention that wheat or corn receive.