Possible Clues:

• The finishing touch
• NHL ref's call
• Not at first cutting up a piece of cake?
• Pilot's concern, during winter months
• Sweet cake topping
• Is it sweet to be at the top?
• It's not this, you'll be seeing, that's so sweet on top
• Sweet coating on cake
• 3 getting cold?
• How sweet the sound of when I am a vocalist