[masraum]

Originally Posted by john70t

I've been told that if you get good sushi such as from a local master, don't use any soy because it would be an insult to the chef.
(i.e. his food tastes so bad it has to be covered up).
Japanese quietly laugh at Americans who pour soy over their meal like it's fudge sauce on ice cream.
I think you're supposed to turn it over and lightly dip the fish part (without breaking it in half)

In general, when talking about nigiri, at least, yes, condiments including wasabi are added to each piece of nigiri. You shouldn't need to add anything. If you do, like you say below, don't get the rice into the soy sauce, dip the fish side into it.

Practice your o'hashi skills with peanuts.

sushi is finger food. You're not supposed to eat it with chopsticks.