니기리 is a type of sushi that consists of a small mound of rice topped with a slice of fish or other seafood. The rice is typically seasoned with vinegar, sugar, and salt, giving it a slightly tangy flavor. Common toppings include salmon, tuna, and shrimp, but many other ingredients can be used. This sushi style is often served with a small amount of wasabi and soy sauce for added flavor. Unlike maki, which is rolled sushi, 니기리 is hand-formed, making it a popular choice for those who enjoy a more direct taste of the seafood.