Possible Clues:

• Adding coffee to unhealthy meal gets you nowhere
• Soap even applied to synthetic material? Not half
• Cook full English breakfast without coffee and sugar?
• Insincere praise (that will get you nowhere?)
• Blarney
• Fawning succeeding in case of flunkey
• Cosying up with youngsters drinking coffee
• Excessive praise of cook introducing milky coffee
• Cook including something made with milk and butter
• Tyre problem — the same by Shakespeare (I'm amazed at your boast!) when year off — brings humorous acceptance of sweet talk