Frozen Karashi Mentaiko in Egg Sac is a popular Japanese ingredient, known for its spicy and savory flavor profile. It consists of pollock roe seasoned with chili peppers and other spices, encased in a thin egg sac, and then frozen to preserve its taste and texture.
Chefs often use this delicacy to add a piquant and umami-rich accent to dishes like pasta, rice, and onigiri, or as a bold topping for sushi and sashimi, offering a unique blend of heat and flavor.