Lu Xinyi was thankful that during her short training under Chef Kawashima's wing, she was able to learn the basics of making sushi. As for Ye Xieren's familiarity with the Japanese Cuisine, it put her at a disadvantage. However, three days of training with Chef Kawashima had given her a good foundation to understand foreign cuisine.
In making sushi, the first one needed to master perfectly seasoned sushi rice. Sushi rice was plain short-grain rice that had been steamed and flavored with vinegar, salt, and sugar. It should remain tender at room temperature.
Sushi could feature all different types of fish and vegetables, but it always contained sticky, chewy sushi rice. The subtle sourness of seasoned sushi rice typically came from rice vinegar.