Possible Clues:

• Almond paste, sugar and egg whites
• Ruin zest, an ingredient for cake?
• Paste on cake
• Stuff turned up: not a sausage, a new sort of sweet
• Spoil part of trousers with an almond concoction
• Cake icing made of ground almonds and sugar
• Kind of icing, nice on cakes
• Article sustains damage to fastener: maybe it's icing over
• Damage fastener before taking an item of food
• Artist with inner energy, fellow carrying that paste