The invention relates to a method of delivering a predetermined volume of beverage into a thermoplastic container formed from a heated preform positioned in a mold, characterized in that the product includes a step of injecting at least some beverage into a recess in the preform so as to promote expansion of the preform inside the mold, the mold defining the shape of the container, a volume of beverage introduced during the injection step being at least equal to said predetermined volume, and, in addition, the method includes a step of sucking out a fraction of said volume of the beverage introduced until the volume of beverage remaining in the container is approximately equal to said predetermined volume.