Possible Clues:

• 'It's rasher to make it just in time (3,2,4)'
• Leave dangerously late; allow little margin
• That's rash enough to make one rasher
• It's rasher to be only just in time
• 9 across will help one to make 22 down, just in time
• That's a rasher thing to do
• Allow little margin for error cooking fettucini
• It might be rash, but that's how to make it rasher
• Almost be too late, being drunk one time on brandy
• It would be rash to make it like a rasher