2.  Bring to boil, add all the vegetables and spices and cook till vegetables become tender. 

3.  Add white vinegar. Add corn flour paste while stirring. Stir till soup thickens.

4.  Put egg whites slowly while stirring. 

5. Add oil and remove from stove immediately.

Note:

Corn flour should be added only to the amount where the soup starts to thickens.

If lesser quantity is required may reduce all the ingredients proportionately.