Rye sourdough

Also Rugbrød, Ruisleipä, Vollkornbrot

A dense, dark, sour loaf of all rye, leavened with sourdough and left a day before cutting.

Rye sourdough

What makes it rye sourdough

  • All rye, or nearly.
  • Leavened with sourdough for the acidity.
  • Baked long, and rested a day before slicing.

Where it comes from

Rye doesn't build gluten the way wheat does; its loaf is held up by starch and gums instead. And rye flour is rich in enzymes that would turn that starch to gum — the acid of a sourdough holds them back. So all-rye bread is sourdough bread by necessity, not style.

Across the north it's the everyday loaf: under smørrebrød in Denmark, in thin rounds with a hole in the middle in Finland, packed with whole grains in Germany.

How it varies

Rugbrød
Danish, with cracked rye and seeds, baked in a tin.
Ruisleipä
Finnish, flatter, often a ring.
Pumpernickel
Westphalian, baked very long at very low heat until nearly black.

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