My neighbor gave me a bag of these… anyone know what they are? How do you eat them?

Củ ấu also known as water caltrop, devil pod, buffalo nut, horn nuts, ling nuts, bat nut, mustache nut or water chestnut. This is a fruit and also nut forming from the water caltrop plant which is a water weed that blocks dense waterways. The fruits are boiled and the starchy inner meat is eaten.

In Chinese medicine the fruit is known to cleanse the body. It is rich in potassium, starch, phenolic acid, and also shown to have anti cancer and a high level of antioxidants.

To me the flavor is very similar to cassava and not much like a water Chestnut at all despite the name. A fun little nut to try if you want to switch up your starch sources. I’d recommend trying it if you ever get the chance.