Feb. 3, 2009 - More Kitchen Science

We experimented with yeast.  We learned that it is a fungus that feeds off of sugars.  As it ferments, it produces carbon dioxide which creates bubbles.  We also learned that yeast like warm, moist environments.  We had two bowls - one with lukewarm water, yeast and sugar. In the second bowl we added very hot tap water instead of lukewarm water.  Here is what we observed after 15 min.

We determined that the hot water killed the yeast.  The bowl with the lukewarm water bubbled and became very spongy.  The yeast was 'blooming.'  We also experimented with different sweeteners.  We had 3 bowls in which we added yeast and lukewarm water but added to one - corn syrup, to another - brown sugar, and to the last - white sugar.  They each bubbled at the same rate.  We later made some homemade bread.

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Feb. 6, 2009 - Untitled Comment

Posted by Joycemarie

Your bread looks wonderful. I love to make homemade bread.

Hope all is well,
Joyce

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