Related Clues:

• Still covers like fungus
• Something used by bakers still, while inside
• It's needed in the brewery -- yard's first right on the map
• Bakery or brewery need
• Rising agent in a bakery
• It can raise a lot of dough
• Kombucha brewing need
• Fermenting agent used in brewing
• Brewmaster's need
• Cause of ferment coming from unknown quarter
• Riser in the oven
• Baker's dough raiser
• Something in beer festival: fellow going for something unknown
• It's used for brewing, though containing arsenic
• Organic elevator