Hotate Mentaiyaki is a popular Japanese dish that combines the sweetness of scallops with the umami flavors of spicy cod roe. To make this dish, you will need fresh hotate (scallops), mentaiko (spicy cod roe), mayonnaise, soy sauce, and green onions. Start by preheating your oven to broil. In a small bowl, mix together the mentaiko and mayonnaise to make the mentai sauce. Set aside. Next, season the scallops with soy sauce and place them on a baking sheet. Broil the scallops for about 3-4 minutes, or until they are slightly browned and cooked through. Remove the scallops from the oven and spread the mentai sauce over each scallop. Return the scallops to the oven and broil for an additional 1-2 minutes, or until the sauce is bubbly and slightly charred. Garnish with chopped green onions. Serve immediately and enjoy the creamy and spicy flavors of the hotate mentaiyaki. This dish is perfect as an appetizer or as part of a Japanese-style seafood feast.