• Question: Why dose yeast make bread rise?

    Asked by FootballFred03 to Andrew, Jade, Jessica, Kevin, Lynn on 23 Jun 2015.
    • Photo: Jess Wade

      Jess Wade answered on 23 Jun 2015:

      Hey Fred,

      yeast is a fungus! How gross ! Yeast responds to warm water which makes the little cells of yeast come to life. When we make bread or cinnamon rolls we use sugar and bread, the yeast begins to eat the sugar. The yeast then digests the sugar and gives of carbon dioxide, which makes the bread rise! It also gives off alcohol, which evaporates when the bread bakes. The little bubbles expand all of the protein in the flour (gluten).

      Enjoy bread making!

    • Photo: Andrew Fensham-Smith

      Andrew Fensham-Smith answered on 23 Jun 2015:

      Yeast converts the sugar that you put into the dough into alcohol (only a little bit!) and carbon dioxide. Carbon dioxide is a gas, and so creates little pockets in the bread which push our and make the dough rise.

    • Photo: Kevin Honeychurch

      Kevin Honeychurch answered on 23 Jun 2015:

      the same reason beer is fizzy