1.   In a blender or food processor, puree the vegetables with the cooking liquid and the tomato juice.

2.   In a blender, puree the vegetables along with a cup or so of chicken broth.

3.   Puree the vegetables in a food mill, and add back to the sauce.

4.   Puree vegetables in batches using a food processor, food mill or blender.

5.   Using a blender or food processor, puree vegetables in batches, adding stock as necessary to blend smoothly.