Mince (grind) or
process the liver, one of he onions and the bread.
Add the sage, egg and a little salt and pepper. Mix
well.
Chop the remaining onion. Heat the oil in a
saucepan and cook the onion for 2 minutes. Add the
tomatoes, tomato puree and water.
Cover and simmer
for about 5 minutes, stirring occasionally, until
pulpy. Season to taste and add the sugar.
Meanwhile,
bring a large pan of water to the boil. Drop
tablespoonfuls of the liver mixture into the pan and
simmer for about 4 minutes until cooked through.
Drain.
Add to the tomato sauce and heat through. Meanwhile,
cook
the tagliarini
according to the packet directions. Drain and toss in the butter.
Pile the pasta on
to serving plates and spoon the fegatini and tomato
sauce over.