The truth: "Most countries in Southeast Asia have some variation of this. It began as a way of preserving fish because vinegar worked as an antibiotic. Cooked rice and vinegar were packed around fresh fish to preserve them."
Sushi has to be expensive
The truth: "When sushi started out, it was street food, like a dirty-water dog in New York. There were little wheeled stalls where they'd cut the fish up. Now sushi is probably closer to stopping and getting a hot dog or hamburger. It's sort of a nice snack. It's casual food, but you don't want to overstate it and say it's fast food, because there are sushi bars in Japan where you're going to pay $500 for a meal."
Some sushi fish are served alive
The truth: "That's called ikizukuri. It's a different area of Japanese cuisine and not related to sushi at all."
Women can't be sushi chefs because their hands are too hot
The truth: "It was just not an occupation that women did; they didn't do a whole lot of cooking in public places. But now there are plenty of female chefs all over Japan."
Salmon's a traditional sushi fish
The truth: "Salmon was not considered a traditional sushi fish because it spoils really quickly. It only rose to prominence after refrigeration became widespread in Japan."
Miso soup is an appetizer
The truth: "In Japan, miso is usually what you eat for breakfast."
Sushi pairs with sake
The truth: "Since sushi and sake are both made with rice, that's too much of the same thing. You usually pair it with beer or green tea; I can't recall seeing anyone eat sushi and sake in Japan."
Rub your chopsticks together to get rid of splinters
The truth: "When you order noodles, you rub your chopsticks together to create a rough edge to pick up the noodles, not to get rid of splinters. If you did that in a place owned by a Japanese person, you'd insult them."
Sushi means "raw fish"
The truth: "We don't really know the etymology of the word sushi. It's written with characters that are there for the sound rather than what they mean. There's a lot of questions as to what the word actually means, but the idea that sushi means 'raw fish' is wrong. 'Su' is normally vinegar, and there's a lot of disagreement on 'shi.'"
There's a sushi-specific grade of fish
The truth: "They're just basically saying it's fresh enough to eat raw. Is there some sort of special grade of fish that's suitable for sushi? There is not. It has to obviously be fresh enough, or presented in such a way that it doesn't have any bacterial growth. That's what constitutes sashimi-grade fish -- fish that is fresh enough that you can eat it raw."