This is the 10163rd most frequent Catalan word.
pastisser
Pastry chef or confectioner.
Here, 'pastisser' is used as a noun to refer to a professional who makes pastries or cakes.
El pastisser prepara un pastís de xocolata.
The pastry chef prepares a chocolate cake.
In this sentence, 'pastisser' is used to denote a profession, indicating someone's career aspiration as a pastry chef.
He decidit estudiar per ser pastisser.
I have decided to study to become a pastry chef.
Here, 'pastisser' is used metaphorically to describe someone as highly skilled in baking, without necessarily being a professional pastry chef.