Possible Clues:

• It's by no means rare for it to be more than 501, perhaps
• Shakespearean mistress taken too far?
• Exaggerated; cooked too much
• Never so rare for this to come to more than five hundred and one (8)
• Cooked too much
• Twice finished burnt?
• Drove off ahead of one, which is really a bit much!
• Deliveries executed, but carried too far
• Again concluded that it is exaggerated
• Drove off at lunchtime, having tired oneself out