Prepare the onion, ginger, carrot, and celery by washing, peeling, and giving them a rough chop.
Measure all of the other ingredients and add them to a blender.
Blend for 1 minute or until the desired consistency is achieved.
Transfer your homemade dressing to a storage container like a mason jar with an airtight lid. Let it hang out in the refrigerator for about 2 hours before serving.
When you are ready to serve, just give the mason jar a good shake because the oil will separate from the rest of the dressing.
Make the Salad
To assemble the salad, start with the iceberg lettuce. Cut a head of iceberg in half and remove the core. Dice the wedges of iceberg into bite size pieces. Wash and dry with a salad spinner or use paper towels.
Prepare the carrots by washing, peeling, and cutting into julienne strips. You can also by the pre-shredded bag at the grocery store.
For the red cabbage, cut a wedge of the cabbage and remove the core. Remove the outer layers
Dress the iceberg lettuce with the ginger dressing first. Then top with the other vegetables. Serve.