Possible Clues:

• Polenta base
• Men about to penetrate hard stuff to produce ground stuff
• Milled maize
• American maize flour
• Complex network broadcasting feed that's synonymous with Porridge
• Unreliable romance language initially could be mush?
• Grain medium implanted in eye covering (large)
• Musical magazine consumed by colourful type grounded in American restaurant
• Cook could use such a service, servants detailed to chop fuel
• Food business existing around outskirts of Nottingham