«We all know the part about the princess kissing the frog and his turning into a prince. This entertaining picture book by Andrés Kalawski and Joaquín Cociña starts at the most stupefying point in the Grimmian fairy-tale and runs with it. The many examples of transformation and the sparingly coloured, somewhat enigmatic black-and-white illustrations invoke the story’s magic and dream-like character, offering readers an invitation to come up with more metamorphoses.»