LOL. They aren't bad at all. Basically neutral. Peanut butter, cream cheese, butter or jelly. Tastes fine with all of those. I sure don't think you need to soak them in anything. They are like hard water crackers.
In the olden days here, whenever you went to visit a Native family, you got fresh hot coffee and a pilot bread with butter and strawberry jam. They are a dietary staple in the bush. We keep them on hand for survival rations because they keep indefinitely if they are protected from moisture. Kids reuse them: Smear them with peanut butter and jam, lick it off, add another coat, lick that off, add sloppy joe, lick that off, etc. My dad used to break them (this can be a project requiring a screwdriver, etc.) and soak them in milk for “graveyard stew.” Enjoy!