The Lupine is not only a beautiful plant, but the seeds have long been used for food. It is of the legume family, which includes alfalfa, clover, peas, beans, lentils, lupins, mesquite, carob, soybeans, peanuts, and tamarind.

According to Wikipedia - "Seeds of various species of lupins have been used as a food for over 3000 years around the Mediterranean and for as much as 6000 years in the Andean highland, but they have never been accorded the same status as soybeans or dry peas and other pulse crops... Users soaked the seed in running water to remove most of the bitter alkaloids and then cooked or toasted the seeds to make them edible."
Press here for Link