Related Clues:

• Sugar coating - a danger to aircraft, on roads etc
• Cake-topper
• Concreted sugar
• Decorating (a cake)
• "Cupcake Wars" finish
• Baker's final touch
• Writer of creamy messages
• Strudel topping
• Topping enjoyed after blowing out candles
• Hockey penalty
• Finishing touch of a sort
• ''Congratulations!'' message source, maybe
• … it's sweet to hear one give voice
• In charge of making gin for Christmas cake
• Wine bucket, e.g