During a Q&A on Twitter, J.K. Rowling made a surprising revelation about Rubeus Hagrid, one of the best-loved characters from the Harry Potter series.
Home bakers generally donât need to reduce or increase liquid amounts to compensate for the type of yeast used since the quantities are so small. 1  To substitute instant or bread machine yeast for active dry yeast, use 25% less instant yeast than active dry.
Bread made from 100 percent rye flour, which is very popular in the northern half of Europe, is usually leavened with sourdough. Baker's yeast is not useful as a leavening agent for rye bread, as rye does not contain enough gluten.btaining a satisfactory rise from sourdough takes longer than a dough leavened with baker's yeast because the yeast in a sourdough is less vigorous. In the presence of lactic acid bacteria, however, some sourdough yeasts have been observed to produce twice the gas of baker's yeast.