Arrange cauliflower and carrot in a vegetable steamer over boiling water. Cover and steam 3 minutes or until vegetables are crisp-tender. Plunge into cold water; drain.
Combine cauliflower mixture, celery, and next 3 ingredients in a bowl; toss gently, and set aside. Combine vinegar and next 3 ingredients in a bowl; stir well. Pour over vegetalbles; toss gently to coat. Cover and chill.
