7. Treacle tart
7. Treacle tart (Image 7 of 8)
How do you keep lethargic teenagers alert and eager for an afternoon of double maths? Serve them a sponge dense enough to sink a ship, that's how. Sticky and sweet it tasted pretty good but it's hard to solve algebraic equations with a distended belly.
If you're free to snooze after you've over-indulged, rustle up this delicious treacle tart recipe - lumpy custard optional.

