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Elementary Dictionary
       

yeast

 
pronunciation:
yist
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part of speech: noun
definition: Yeast is something that is often used in making bread. Yeast is a substance that makes bread rise. Without yeast, or something similar to yeast, dough will bake in an oven but the bread will be flat.
When Anna's mom makes bread, she first mixes yeast with warm water and then she measures the flour. After she adds the yeast and water to the flour, the dough has to stay in a warm place for a while. During that time, the ball of dough becomes much bigger. That's because of the yeast.
 
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