The process includes a mix of cheese production whey (residual liquid from cheese manufacture) with blood of slaughter animals, whereby a biological process is undertaken with whole whey and through a thermal process proteins are precipitated and the yeast cells of the biomass are inactivated, both of which are separated simultaneously (whey protein and inactivated yeast); to this precipitate is added the precipitate of the oxidized blood together with the liquid of the biological process; this composite is put through a colloidal mill until a light and palatable paste is produced. The resultant product has a long shelf life and is constituted by liquid whey, residual from the production of cheese; yeast obtained during the biological treatment of whey; blood of slaughtered animals; a farinaceous support; and additives, as desired.