Assertion: gas's amount | /r/Synonym | the most powerful tool
Facets:
value: in winemaking
type: LOCATION
Source sentences:
text: Small amounts of sulfur dioxide gas addition (or equivalent potassium metabisulfite addition) to fermented wine to produce traces of sulfurous acid (produced when SO 2 reacts with water) and its sulfite salts in the mixture, has been called "the most powerful tool in winemaking".