
“The jelly began to grow. Soon it was too big for the bowl,and it flopped out onto the table. Soon it grew too big for the kitchen, and it burst out through the door.
“WobblewobbleWobblewobble!" it cried. It had grown into a Jelly Monster, and it set off into the town to turn everything to jelly.
“Who can save the world from this terrifying monster?”
(From the back cover)

It's an exciting and only slightly scary children’s story with a humorous and satisfying ending, and there’s lots of vivid illustrations of the evil creature as it goes on its jelly rampage.

This is just the thing for small boys, and I read it to my young nephews again and again, doing the jelly monster’s wobble call as it jellified shops, houses, and the swimming pool.
They are now 16 and 18, and the younger one told me, “The Jelly Monster is an excellent book for children; I have very fond memories of Roger reading it to us when we were younger. It was my favourite out of all the books he read”
His brother agreed with what I've written here, but added, "I always enjoyed you reading it to me”
I found this rather battered copy at the local library, and for the amount of entertainment it’s provided, was a bargain at 60p.
The Jelly Monster by Mike Ratnett, Illustrated by Jonathan Bentley.