Rinse the uncooked rice in a strainer until
the water runs clear.
Add the rice to a medium saucepan with 3
cups water, and bring to boil. Reduce heat, cover, and cook for 20 minutes.
Remove from heat and cool.
Meanwhile combine the salt, sugar, rice vinegar,
and vegetable oil in a saucepan, and cook over medium heat until the sugar has
dissolved. Remove from heat and cool.
Pour the rice vinegar mixture over the
cooled rice, and blend well.
Using your fingers, roll a golf-ball sized
amount of the seasoned rice in your hand into an oval shape. Continue with the
remaining rice.
Place each rice ball on a serving plate,
and divide and drape the uni over each rice ball.
Garnish with spring onions, and serve with
soy sauce, wasabi, and pickled ginger.