Like the Underpants books, it rattles along with fast-paced rhyme and is illustrated with bright and detailed scenes.
The central character – a boy called George – decides to go and discover the Yeti, taking with him a backpack, hat, map and tin of spaghetti.
Setting off up a steep mountain path, he bumps into three monsters – none of whom turn out to be the yeti, but instead three creatures named, in turn, Betty, Hetty and Netty. Each one has contrasting advice on what the yeti will like to eat. When he does eventually discover the yeti, George is delighted to find that he in fact only eats spaghetti.