How To Use Chopsticks
Think of the chopstick as a pair of prongs, the only difference being that there are two separate parts or sticks. One stick is held in stationary position and the other is moved.
The Dining Method
With Miso Soup (misoshiru) or Clear Broth (suimono), you may use your chopsticks to pick out the solid pieces. Feel free to drink the soup as you would a cup of tea. Slurping noises are not considered bad manners, so have at it.
The thinly-sliced pink ginger on your plate is called gari. Eat just a slice between pieces of sushi to re-enliven your palate. The shredded white radish, called daikon, is for cleansing your palate between different orders. Wasabi is the little green chunk of horseradish paste that some often mix with shoyu as a sauce for dipping sushi. If you aren't used to eating wasabi, be forewarned: when eaten full strength, it has an electric effect on the sinuses that can make a strong man weep openly.
Passing sushi and sashimi
NEVER pass sushi to another diner using your hashi. Pass them the plate so they can pick it up themselves. Always pick the sushi up off the plate with the other end of the hashi - the end that doesn't go in your mouth. And of course, never yell "go long!" or "incoming!" and then huck sushi across the table.
Eating sushi and sashimi
Pick up the sushi, turn and dip the fish part, not the rice, into the soy sauce-wasabi mixture, and put the whole portion in your mouth, flipping the sushi so that the fish is on your tongue. Sushi is finger food. It's okay to pick it up with your hands if you like. Sashimi, however, is not. Only use your hashi to eat sashimi.
Sushi bar etiquette
NEVER smoke in a sushi bar, even if there is an ashtray provided. I know, it sounds crazy, but think about it: smoke will interfere with the flavor of everyone's sushi. Therefore, to smoke is to be disrespectful to the chef's work. You may be feeling gregarious after a few shots of sake. If so, offer a drink to your sushi chef. He doesn't expect it, but if you have a drink with him, he will toast with Kampai! (to your health).