When a recipe calls for mirin, the Japanese sweet rice wine, you need a combination of acidic and sweet flavors. Add between 1 and 2 tablespoons of sugar to 1/2 cup of white wine, vermouth, or dry sherry to replace 1/2 cup of mirin.
Feeling seafood? Check out this awesome noodle dish featuring mirin: Grilled Shrimp Satay with Shiitake Mushrooms, Baby Bok Choy, and Udon Noodles. Our Pokéball Poke Bowls are a fun way to incorporate this sauce as well.
And for more information on ingredient substitutions, see our Ingredient Substitutions guide.