Solanum stoloniferum is used for food in USA and can be eaten raw or cooked. It is also eaten by the Tarahumara Indians in the Chihuahua, Mexico.
It tastes like a sweet chestnut. When eaten raw the potatoes are mixed with clay. One report says that after every mouthful of raw potato, a person takes a bite of white clay to counteract the unpleasant astringent effect in the mouth.
The raw tubers have been used in the treatment of stomach acid.