Häussler-whole-wheat-sponge August 22, 2021August 22, 2021 https://countrylivingkitchen.com/wp-content/uploads/2021/08/Haussler-whole-wheat-sponge.mp4 Result after 5 minutes of mixing. Note the sponge is not “smooth” since I used 3 cups of freshly ground red wheat flour.