A system for packaging a frozen product, comprising a packaging apparatus, adapted to place and seal a fluid food product into a flexible container, a pasteurizing unit, configured to pasteurize the food product in the sealed container, a form, configured to press upon and deform at least one surface of the container, to produce a series of compartments in the container with thin segments therebetween, and a freezer, configured to freeze the product in the container with the form in place upon the at least one surface.