|Soy sauce||1⁄4 Cup (4 tbs)|
|Rice vinegar||1⁄2 Cup (8 tbs)|
|Bonito shavings||2 Tablespoon (dry fish flakes)|
|Konbu square||1 (1 inch kelp)|
|Orange||1 , quartered|
In a saucepan, combine the soy sauce, rice vinegar, bonito shavings, konbu and the orange quarters. Let stand for 30 minutes.
Bring to a boil. Just as it starts to boil, remove from the heat. Allow to cool, then strain through a cheesecloth lined sieve.