Cream of vegetable soup

Sauté the leek with the oil, add the water with the rest of the vegetables and salt to taste. Let it boil for about 30 minutes until the vegetables are soft. Add the cheese (optional) and beat in a blender. If you have thermomix: oil and leek, blend 4 seconds speed 4. After 7 minutes varoma 1. Add the vegetables, water and salt 35 minutes 100º speed 1. Add the cheese and blend 1 minute at progressive speed 5-7-10.