Combine in a blender and process until thick and smooth:
- ½ cup coarsely chopped carrots
- ¼ cup coarsely chopped celery
- ¼ cup vegetable oil
- ¼ cup rice vinegar
- 2 tablespoons chopped peeled ginger
- 2 tablespoons chopped onion
- 2 tablespoons sugar
- 1 tablespoon soy sauce
- 2 teaspoons ketchup
- 2 teaspoons lemon juice
- 1 teaspoon salt
- ½ teaspoon black pepper
- 2 dashes hot pepper sauce