French language Q&A Forum

I am looking at the phrase 'toute la nourriture que j'aimais le plus au monde' and wondering why it's 'au monde' and not 'du monde'. According to Larousse, 'au monde' 'renforce une négation : Personne au monde ne peut dire le contraire'; whereas 'du monde' 'renforce un superlatif : Tout s'est passé le mieux du monde'.

Bonjour Madame Cécile et Madame Aurélie !

A small message I would like to share with you. Yesterday, I received an e-mail via Help and Support which stated that French experts are of the opinion that I post quite a large number of questions. Indeed it’s true I admit but I would like to tell you that it’s me (Shrey) a school- going thirteen year -old boy who learns French through Kwiziq under my Mom’s name (Varsha). I always had a desire to excel in French which is not taught in my school  in India (as the mail suggested me to consult my own teacher sometimes for my  queries). After being acquainted with Kwiziq, which motivated my inquisitive mind to grab this very opportunity, I whole-heartedly have started devoting some time to French apart from my school studies. With your constant support and dedication in helping me while answering my doubts since I joined a Premium membership in October 2018 helped me to achieve DELF A1 diploma. I will be indebted to you both forever. I hope you understand my circumstances and would devote your valuable time in future to help me master my French.

Merci beaucoup et Bonne journée !