Soak the
mushrooms in warm water for 30 minutes then drain
and discard the stalks. Cut 1 spring onion into
chunks and chop the other.
Heat the oil and fry the
mushrooms, spring onion chunks, garlic, ginger and
chestnuts for 30 seconds. Add the eels and stir-fry
for 1 minute.
Add the soy sauce, sugar, wine or
sherry and water, bring to the boil, cover and
simmer gently for 1 1/2 hours, adding a little water
during cooking if necessary.
Blend the corn-flour
and water to a paste, stir into the pan and simmer,
stirring, until the sauce thickens.
Serve
sprinkled with sesame oil, and the chopped spring
onions.