Sushi

Lore & Background

Sushi is a traditional Japanese dish defined by vinegared rice, known as *sushi-meshi* or *shari*, combined with various ingredients such as seafood, vegetables, or meat, with raw seafood being the most common. The modern form, nigiri-zushi, was created by Hanaya Yohei around 1824 in the Edo period, featuring hand-pressed vinegared rice topped with seafood; it served as fast food for the *chōnin* merchant class. Sushi is typically made with medium-grain white rice, though brown or short-grain rice may be used. Common seafood includes squid, eel, yellowtail, salmon, tuna, or imitation crab (surimi), and some varieties are vegetarian. It is often served with pickled ginger, wasabi, and soy sauce, with daikon radish or pickled vegetables as garnishes. Sushi’s origins trace to narezushi, a Southeast Asian method of preserving freshwater fish in fermented rice, possibly from the Mekong or Irrawaddy river basins. A fourth-century Chinese dictionary first mentions a similar food. In Japan, during the Yayoi period, wet-field rice cultivation led to fish being caught in paddies, and pickling with fermented rice became a protein source. The term *sushi* means “sour-tasting,” from an archaic conjugation of the adjective *sui*. Narezushi, known as *funazushi* in Shiga Prefecture, remains a regional specialty. During the Muromachi period, namanare shortened fermentation, allowing rice to be eaten with the fish. In the Edo period, haya-zushi eliminated fermentation by mixing vinegar directly with rice, enabling fast preparation. This innovation produced nigirizushi, chirashizushi, inarizushi, and makizushi. Early Edo-period nigiri used rice three times larger than modern portions, half the vinegar, and more salt instead of sugar.

Reader's Guide

Sushi’s significance stems from its evolution from a method of preserving fish through lactic fermentation to a globally recognized dish centered on vinegared rice. Ecologically, its reliance on seafood ties it to marine environments, while its preparation reflects regional ingredients and techniques. Behaviorally, sushi is traditionally made with medium-grain white rice, though brown or short-grain rice may be used, and it commonly incorporates seafood such as squid, eel, yellowtail, salmon, tuna, or imitation crab; some varieties are vegetarian. It is often served with pickled ginger, wasabi, and soy sauce, with daikon radish or other garnishes. The defining component is the vinegared rice, seasoned with sugar and salt, which distinguishes sushi from sashimi—thinly sliced raw fish or meat served without rice. Historically, sushi originated from narezushi, a fermented fish stored in rice for months, where the rice was discarded after fermentation. This practice, influenced by Southeast Asian methods, used lacto-fermentation to prevent spoilage. During the Muromachi period, namanare emerged, shortening fermentation and allowing rice to be eaten with the fish. In the Edo period, hayazushi eliminated fermentation entirely by mixing vinegar directly with rice, creating a fast food for the chōnin class. The modern form, nigiri-zushi, was popularized by Hanaya Yohei around 1824 in Edo, featuring hand-pressed rice topped with seafood. Today, sushi is one of the world’s most popular dishes, with numerous styles and presentations reflecting local flavors.

Did You Know?

• The word 'sushi' literally means 'sour-tasting' and comes from an antiquated conjugation of the Japanese adjectival verb sui ('to be sour').
• Narezushi, an early form of sushi, involved fermenting fish in rice for possibly months, after which the rice was discarded.
• Sushi does not mean 'raw seafood'; this is a common misconception among English speakers.