Related Clues:

• Enquiry about drug: grass?
• One causing rising poet to turn tail
• Fungus; food supplement
• (Pasta) cereal
• Agent raising vital staff
• Ground cereal
• Poet turns tail, seeing froth on beer
• Fungus as yet rather uncommon
• Dough-raising agent
• Agreed about a time for lifting agent
• Bloomers may be on the rise because of this
• Unknown quantity bearing fungus
• Dough raising agent
• You put on a stone — that'll create ferment
• I agree to maintain a temperature that baker needs