Looks like extra dark rye bread to me. Been meaning to try it this week but I had a late summer cold to keep me from enjoying anything. My taste bud right now is so bad if I had ice cream, it'd taste like ketchup. if I had chicken noodle soup, it tastes like moldy tomato. If I had ramen noodle, it tastes like cardboard. (oh wait, that is normal!)
I've had to skip pricier meals this week and passed up a trip to sushi restaurant because with rice, fish, and wasabi it might end up tasting like chocolate ice cream with mustard and soy sauce on.