The invention relates mainly to a process for preparing a cheese powder with a view to the reconstitution of a cheese product, which is essentially characterized in that it comprises at least the steps of: - preparing a dairy blend (1) comprising components consisting in particular of fat and protein, the respective fat and protein contents of which, relative to the solids content of the blend (1), are adjusted according to the corresponding targeted contents in the cheese product after reconstitution, - rennetting (2) of the dairy blend obtained in the preceding step, coagulation and production of a coagulum, - cutting of the coagulum (3) obtained in the preceding step and production of a cheese blend, - functionalization (5) of the cheese blend obtained in the preceding step via at least one emulsification operation and production of a functionalized cheese blend, - drying (6) of the functionalized cheese blend and production of a cheese powder (7) capable of being reconstituted by mixing with a liquid component. The invention also relates to a functionalized cheese powder and to a process for preparing a cheese product, which comprises at least one reconstitution step which consists of at least one operation of mixing (8) a liquid component with the cheese powder (7).L'invention porte principalement sur un procédé de préparation d'une poudre fromagère en vue de la reconstitution d'un produit fromager qui est essentiellement caractérisé en ce qu'il comporte au moins les étapes de: - réalisation d'un mélange laitier (1) comportant des composants constitués notamment de matière grasse et de matière protéique et dont les teneurs respectivement en matière grasse et matière protéique relativement à la teneur en extrait sec du mélange (1) sont ajustées selon les teneurs correspondantes visées dans le produit fromager après reconstitution, - emprésurage (2) du mélange laitier obtenu à l'étape précédente, coagulation et obtention d'un coagulum, - découpage du coagulum (3)