“roll” is rice and fish (or other ingredients) rapped with dried seaweed.-roll is rice and fish (or other ingredients) rapped with dried seaweed outside. california roll is made with rice outside but this is not normal in japan. the reason why rice is outside in california roll is because in the past when japanese food was not popular, americans did not like to see the dried seaweed. so, the sushi chefs in the us made a roll with rice outside to conceal the dried seaweed. in japan, japanese enjoy the crisp texture and flavor of the dried seaweed that dried seaweed is used outside (to wrap). other answers are;omakase means chefs choice (recommendation).it is okay to drink beer at sushi restaurant and also it is okay to talk with both the sushi chef and the customers at the counter. actually, one of the entertainments at sushi restaurant is what kind of customers you can meet at the restaurant (counter). and a good sushi chef is who can not only make a good sushi but also can draw out a good conversation between customers and make customers to have a enjoying experience.