Combine all ingredients in a blender or food processor and process until very smooth. Makes enough to fill a tupperware squeeze bottle. Refridgerate.
*Note...I found the 3 Tablespoons of fresh ginger root to be a little hot, so you might try using the chopped ginger in a jar because it is a little milder than the fresh. Also, you can add a little more soy sauce if you would like! It has the best flavor after it has been refrigerated a day or two!
Michael Kapps (almcepud@crl. Com) said that the chef at Benihana's San Fransisco gave him a xerox copy of his secret recipe book for his birthday so, this is the real one-and-only Benihana's ginger dressing straight from the guys in charge.