Made the tempura sauce along with the Japanese Tempura that accompanies this. Outstanding even though I used a vegetable bouillion cube rather than a fish one.
To clear up anymore confusion -- tempura sauce should be a very liquidy consistancy (like water). In Japan you cook tempura at the table and serve it on a deep plate covered in the sauce, so your tempura batter gets saturated with it. Happy cooking!
Mirin and saki are both rice wines. They are ususally found in the liquor store. Hope this clears up any confusion.
have no idea what mirin or sake is & where i would find it in the little town i live but used maple syrup instead (sugar?). the result was a great tasting dipping sauce although a bit watery - not sure if it was meant to be a bit thicker.