Dr Paula Almiron Chris Young, Real Bread Campaign coordinator @PodcastBread Amanda | Fermentation @BreadandwaterA House of Ferment Needs muslin to let out excess air but keep out dust etc

John Cook Dr Paula Almiron Chris Young, Real Bread Campaign coordinator @PodcastBread Amanda | Fermentation @BreadandwaterA House of Ferment That's what we use, cheesecloth with a rubber band to seal it. It rises, but never too much.