Possible Clues:

• Scraped into the fire, perhaps,, to begin with
• What the grind did to the speed in there
• Rasped, perhaps on nerves
• Sounds as if the great editor got into a scrape
• In bits, like cheese
• Like Parmesan, commonly
• Like some cheese ... or some movies
• Shredded
• To be ranked worse than F went down badly
• Like Parmesan