Our theme this episode is vinegar. We'll be exploring the world of vinegar, from the rice vinegar considered a staple of Japanese cooking, to sushi vinegar seasoned with sugar and umami, to red vinegar made from aged sake lees. Rika will show us her own recipe for vinegared sushi rice, topping it with vinegar-marinated aji horse mackerel for a light and refreshing chirashi-sushi with a decidedly grown-up flavor. We'll also be making simmered squid and potatoes with sesame seeds as two simple sides guaranteed to make any dinner lively!