Weetbix. Intergenerational breakfast cereal very low in fat,suger, taste etc
Yeah, we have it here, too.
It's the wheat version of unsweetened cornflakes pressed into biscuits.
Except, you know, bad. Like eating compressed sawdust. Have used it as a representation of dwarven waybread, to give players the idea that dwarves will put up with a lot if it serves a purpose.