Lupini Beans Are Large, Flat, Round, Yellowish Seeds In The Legume Family. Lupini Beans Have A Thick, Tough Skin. They Are Most Commonly Found Cooked And Preserved In A Briny Solution. The Thick Skin Makes The Beans Fun To Eat As The Salty Meat Of The Lupini Can Be "Popped" Out By Squeezing The Skin.