• There is a water soluble sugar that is in beans called oligosaccharides and they are indigestible by human beings. They ferment during the digestion process and hence you have gas.

    Crescent Dragonwagon: There is a water soluble sugar that is in beans called oligosaccharides and they are indigestible by human beings. They ferment during the digestion process and hence you have gas.
    "World Chefs: New cookbook spills the beans ... on beans". Interview with Patricia Reaney, in.reuters.com. February 28, 2012.