 Chop cabbage into chunks and run through your food processor, or chop fine. It's up to you to decide the size you'd like your cabbage to be.  Combine all of the dressing ingredients in a large bowl, whisk well.  Combine cabbage, carrots, and onion and toss well. Pour dressing over the slaw and turn to coat well.  Cover and refrigerate for at least 0 hours before serving to allow the cabbage to soak up the marinade. Overnight is best. 