Traditional Japanese recipe I'd copied from a Japanese cookbook many years ago. The best thing is it will keep indefinitely and even matures and improves with age. I generally make a batch using a whole bottle of sake (and you can use the bottle to hold 1/2 the batch). Is exceptional with Yellow Box Honey... but any good quality honey will do. Excellent marinade for chicken and seafood, or in stir fried tofu/veges.