Mix the beef, egg, breadcrumbs, water, corn-flour,
salt and wine or sherry. Shape into walnut sized
balls.
Heat the oil and
fry the meatballs until browned on all sides. Remove
from the pan and drain off any excess oil. Add the
soy sauce and stock to the pan and return the
meatballs.
Bring to the
boil, cover and simmer for 30 minuets, turning
occasionally.
Steam the spinach
in a separate pan until just softened then stir into
the beef and heat through.