The family of Rosemary Bliss has a secret: the Bliss Cookbook, an ancient leather-bound book of recipes for reverse pie, regular raspberry tarts, and a bunch of magical sweets.

When their parents leave for a trip, Rosemary and her siblings promise to keep the Cookbook locked away. However, things change when a mysterious stranger appears. 'Aunt Lily' rides a motorcycle, wears purple sequined clothes, and makes the most exotic and delicious food. Suddenly, their own recipes seem so, so boring!

So, they decide to give the Cookbook a try. What harm can a few truth cookies or love cakes do? And yet... A hilarious story sprinkled with sugar and plenty of magic.

[Excerpt from the text on the back cover of the edition]