Add in the tarragon and salt. Step 2 Add in the celery, carrot, and basil and blend on speed 9/ 1 minute or until thoroughly pureed. Add the oil and let it heat up. You saved Celery and Carrot Soup to your. I'm Kristianne: mom, pharmacist and Thermomix® USA consultant. I put some crushed crackers in the soup and it makes for a decent lunch. This post is sponsored by://