Sushi, a popular Japanese dish, started as a method of preserving fish by putting it between layers of rice and salt and left to ferment. Over the centuries, the practice has evolved into what we know as sushi today, an appetizer, snack food or a meal of vinegar-flavored rice with topping or filling of a combination of or just seafood, meat or vegetable wrapped in nori, which is toasted seaweed sheet. Although sushi originally had raw fish, it is not the integral but just one of the varieties of ingredients used now.

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