A draught beverage 170 which may be alcoholic or non-alcoholic, for
example a lager or cider in an open-topped drinking vessel or glass 172.
The beverage comprises a water content and dissolved gas content. The
draught beverage is dispensed from a font at a cooled temperature below
the freezing point of water at ambient atmospheric pressure. The dispense
temperature may be in the range of -1.degree. C. to -12.degree. C. The
beverage in the glass may or may not be subjected to external excitement
energy, for example ultra-sound, to encourage formation of nucleation
sites in the beverage. Either way dissolved gas bubbles out of the
beverage causing occurrence of nucleation sites at which ice 188A, 188B
from the water content forms. At least in part the ice has a slushy
character. A head 174 also forms on the dispensed draught beverage and
below the head the ice 188A, 188B locates and develops downwards into the
beverage.