The present invention relates to a method for preparing a probiotic powder comprising at least one probiotic bacterium, said method comprising: a) providing a probiotic biomass composition comprising at least one probiotic bacterium resulting from the culture of said probiotic bacterium in a whey-containing nutrient medium having a total solid content ranging from above 25 % by weight to up to 35 % by weight, based on the total weight of the said whey- containing nutrient medium b) spray drying or freeze drying the said probiotic biomass provided at step a) so as to obtain the said probiotic powder.
