Mentaiko 明太子

Mentaiko is pollock cod roe, a traditional Japanese seafood ingredient that widely used in Japanese cuisine. These ripe eggs are prepared and marinated in salty and spicy flavorful version. 

You can eat it raw for sushi or cook it on a pan with olive oil and serve it on steamed rice; stuff rice balls (onigiri) with either and wrap in seaweed. Or you can mix with mayonnaise to make a pasta sauce or mix it raw in the cooked pasta.