Wiktionary
soy nut
alt. A nut substitute made from a soybean soaked in water, drained, and then baked or roasted. n. A nut substitute made from a soybean soaked in water, drained, and then baked or roasted.
Wikipedia
Soy nut
Soy nuts are made from soybeans soaked in water, drained, and then baked or roasted. They can be used in place of nuts and are high in protein and dietary fiber.