Related Clues:

• Sugary coating unwelcome on aircraft
• Piping bag output
• Omitting small line carving cake decoration
• Great British Bake Off contestant, at times
• Sweet cake topper
• Added bonus, metaphorically
• Here in Paris no good? Topping!
• Sweet thing in cakes is needed, getting topping on those?
• Sugar preparation for decorating cakes
• Cinnamon roll glaze
• Cake glaze
• Pastry bag content
• Surface frost
• The setter quavers, we hear, getting chilly
• Medium for a birthday message