Roughly chop vegetables and put into 5.5 quart or larger stock pot.
Fill with water to cover vegetables.
Add curry powder, soup powder, salt, and pepper. (One teaspoon curry powder will give a nice mild flavor, more will start to add heat.) Stir.
Bring to boil then reduce heat to a simmer.
Simmer for at least 30 minutes or until vegetables are soft.
Remove from heat and puree with immersion blender. Take care not to lift immersion blender out of soup while it is turned on. You can also use a blender if you prefer.
If soup is too thick you can add more water to desired consistency.
Adjust seasoning to taste.