That ep with Yona getting ready for the dance about what yak fav food was a soup like thing with a tree root thing.

That got me thinking in human history there was at one time it was common to mix Sawdust with flour to make Bread or Sawdust Bread.

I just have to wonder at that ponit eatting that kind of bread is common for the yaks given we see corn and wheat in there country so they would make cornbread too and mix it with sawdust or root dust to make it last longer and bigger