When making pumpernickel, typically a high amount ... Generally speaking, rye bread can be divided into either light or dark rye bread, each of which is made slightly differently.

I love that heavy, black pumpernickel ... is the only bread I know of that is cooked for such a long time. Because of all of this the resulting loaf is slightly sour, moist and dark.

To serve, spoon the steak tartare mixture onto a slice of plain or toasted dark rye or pumpernickel bread. Make a small dent in the top of the tartare and top with a fresh egg yolk. Eat immediately.