Possible Clues:

• Flaky baked dough
• Papa has fry-ups cooked with fat and a crust of this
• Advert over railway for something to eat
• It's often used in pies and canapés
• Flaky breakfast bread
• Ad on old railway that could help generate turnover
• Strudel wrapping
• Lightweight food dragon finished, really empty
• A crust for father's endeavour following promotion?
• Breathe heavily at father's attempt at bakery's flaky cover-up, perhaps