Mentaiko spaghetti is a popular Japanese pasta dish that combines spaghetti with mentaiko, which is marinated cod roe. The dish is known for its creamy, savory flavor, often enhanced with ingredients like butter, cream, and garlic. It is typically garnished with nori (seaweed) and green onions, adding a fresh touch. This fusion dish reflects the blending of Italian and Japanese cuisines, showcasing how traditional ingredients can be adapted into new culinary forms. Mentaiko spaghetti is enjoyed for its unique taste and is commonly found in both restaurants and home cooking across Japan and beyond.