What is the fillings of sushi?

The fillings of sushi can vary widely, but some common options include:

- Raw fish: This is the most common filling for sushi, and can include tuna, salmon, yellowtail, mackerel, and eel.

- Cooked seafood: This can include shrimp, crab, lobster, and scallops.

- Vegetables: These can include cucumber, avocado, carrot, and pickled ginger.

- Egg: This can be either raw or cooked, and is often used in sushi rolls.

- Meat: This is less common, but can include beef, pork, and chicken.

- Cheese: This is also less common, but can be used in some types of sushi rolls.

The fillings of sushi are typically combined with sushi rice, which is a short-grain rice that is seasoned with vinegar, sugar, and salt. The rice is then formed into a ball or roll, and the fillings are added. Sushi can be served with a variety of dipping sauces, such as soy sauce, wasabi, and ginger.