Possible Clues:

• Boil over, when one tells you breakfast is ready?
• Will this tell you how long to have what's been laid in Boyle, by the sound of it
• It's flipped in the kitchen
• Oval measuring device?
• Hourglass, perhaps
• Breakfast waiter may be looking at this in kitchen
• Measuring device near the boiler
• Small kitchen sandglass
• For example, Granny starts clockwork device in the kitchen
• One may be set to, say, three minutes