Ziggurat

Astonishingly, this worked. Normally there is a real battle to get No 2 and No 3 daughter to eat mashed potato with mashed carrot, but today I decided to make a volcano (or so I thought) with fish fingers for fissures and ketchup for lava. No 2 decided I'd made a pyramid, not a volcano, as she tucked in. I explained that if it is a building, it is more like a ziggurat than a pyramid.

Either way, they ate the mash, so result!