The texture is hefty and chewy, with a noticeably thick nature. German pumpernickel originated in regions where wheat is difficult to harvest. As a rare rye-only bread, it's very nourishing and rich ...

Because the higher gluten wheat flour is helping out the structure ... which Myhrvold calls, "An iconic German bread that offers a rye-on-rye experience," as it is also studded with soaked rye ...