Related Clues:

• Breadmaking need
• Fermentation ingredient
• Brewers use it
• Bread elevator?
• Alcohol producer
• Fungi in a supermarket
• Raising agent
• Bread baker's buy
• Point to unknown source of ferment
• Unknown direction for rising
• As spelt perhaps, but its homonym would be a bloomer
• What we put in for a rise, as yet unsettled
• Such will raise unknown point
• This could make a bloomer, say
• Wheat meal