A German ligature that originally stood for 'sz', but can be transliterated as 'ss'. It is never found in Swiss German. It looks like a B, but sounds like an S. Compare to the boring language known as English, which only has the ligatures Ã and Å, which are rarely used.
The only other flour used in traditional pumpernickel is wheat flour, which is used as an ingredient in the sourdough starter, a pre-fermented flour, water and yeast mixture that combines with the rye flour to hold the bread together.
Paska is made with milk, butter, eggs, flour and sugar locally having an inside made with different ingredients. An egg and water mixture is used as a glaze. The Christian faithful in many Eastern Christian countries eat this bread during Easter. Christian symbolism is associated with features of paska type breads.