I just received some seeds From SA and all the info says to remove the fleshy covering. Aparently I think it has already been done because all I see is the hard covering with tubercles. Do I need to just soak them then plant them? I broke one open and it seems fresh- still moist and light colored and sort of the texture of a nut. One site said to soak them in saltwater first. I would be grateful if anyone could help me.