IMO, the best method is splitting the stock into 2, 4,
or more bottles each one of which when needed will
fill 2 or 4 or more one-shot bottles.
If you go for Boston Rounds, clear or amber, buy the
Polycone or Polyseal caps. The bottles may come
equipped so. Also, save for the 1oz the actual
volumes are fractions of a litter. Dan