Our theme this episode is sushi. We'll be introducing bo-sushi, a unique variety of sushi that takes advantage of the natural shape of the fish. Different regions use different ingredients for bo-sushi, such as mackerel or crab; in this episode, we'll be using horse mackerel, a fish commonly eaten throughout Japan. We'll teach you how to marinate the horse mackerel in vinegar to help it keep longer, as well as knife techniques to fillet and spread open the fish while keeping its shape. For our side dish, we'll be making egg drop soup, with tender bits of beaten egg floating in it like blossoming flowers.