Place all ingredients—2 carrots chopped, 2-inch piece of ginger, ¼ onion chopped, 2 tablespoons tamari, 6 tablespoons rice vinegar, ¼ cup avocado oil, 1 teaspoon sesame oil, and maple syrup if suing—in a blender or food processor and run until smooth.
Add water 1 tablespoon at a time until dressing is a pourable consistency.