[Hyakushi]

I'm not sure it depends some resturants use pickled ginger which gives off that really sour taste and some use fresh ginger sarinated in hot sauce or soy sauce.
I love fatty tuna sushi and crab sushi there really good. Ell sushi is a little strong for me though, it taste good but the taste is really strong. Crab Sushi is somewhat sweetly mild (yes I mad that word up ^_^).
Oh yea you can also ask the chef there suppose to come out from the kitchen anyways to see if there dish was a big hit.