With a ratio of 1 part vinegar and mirin to 2 parts soy sauce, this is easy to remember. Up until now, I've been adding sugar and water... but this is amazingly tasty!
I learned this from a friend.
Store the leftover liquid in a container in the fridge and use it in your next stewed dish. Add vinegar and stew it with chicken for a delicious taste.
Enjoy Japanese food around the world.