What is masago sauce?

Masago sauce is a type of sushi sauce commonly used in Japanese cuisine. It is made with masago, which are the eggs of the Capelin fish, mixed with mayonnaise and other ingredients like soy sauce, vinegar, and sugar. The result is a tangy and slightly sweet sauce that adds a burst of flavor to sushi rolls, sashimi, and other seafood dishes. Masago sauce can also be used as a dip for vegetables or fried items. It is often used in combination with other sushi sauces like eel sauce or spicy mayo to create a more complex and flavorful sauce.