Related Clues:

• As some layers turn up, cut over a sour mixture
• Producing eggs hatching outside the body
• Maybe broody old dignitary, a sour drunk
• As layers are initially peeled off, various characters transform
• Egg-laying
• Old celebrity to wake up shortly, like the birds
• Of animals, producing eggs which are hatched after being laid
• A proviso arranged about university as a layer perhaps
• Sorted out various problems originally over egg-laying ...