Assertion: yeast | /r/HasProperty | small piece of fermented dough
Facets:
Source sentences:
text: Yeast, or leaven — is a small piece of fermented dough, which, placed in a larger mass of meal or paste, produces fermentation, and thus, by the escape of the generated gas, diffuses a lightness, or, in technical phrase, raises the dough with which it was intermixed.