You'll find plum wine and Yukari powder (which tastes like salty, sweet, fruity black tea leaves and looks a little like black tea) at any specialist Japanese...
So I tried this. When I googled "Yukari rice seasoning", every result pointed me to "Furikake". Yukari is the brand. My furikake seems based on shredded sushi nori and other "fishy/salty/umami" flavored bits which I put in the coffee grinder to make a powder. Then I made the cocktail per the instructions.
My only recommendation is to not let the lemon juice or the grenadine get control of the flavor. Don't be afraid to dump more of the rice seasoning in than you are comfortable with.
My only recommendation is to not let the lemon juice or the grenadine get control of the flavor. Don't be afraid to dump more of the rice seasoning in than you are comfortable with.