|For the rye levain:|
Prepare the mise en place for the rye levain.
To make the rye levain, combine the rye flour and water with the culture in a large mixing bowl, stirring with a wooden spoon to blend. When blended, scrape down the edge of the bowl, cover with plastic film, and set aside to ferment at 70°F (20°C) for 14 to 16 hours.
When ready to make t