Cut the cauliflower into 1-centimeter pieces. Heat the olive oil in a pan over medium heat. Add the onion until it is translucent, stirring occasionally, for about 5 minutes.
Add the cauliflower and salt, cover the pan, and cook for another 5 minutes. Add the water, cover, and wait for it to boil. Cook for another 15 minutes, until the cauliflower is tender.
Put everything in the blender and puree. Return the soup to the pot and add the sour cream and nutmeg. Season with salt and freshly ground pepper. Serve hot.
Nutritional Information
* * Information per 100g serving, percentage of daily values based on a 2,000 calorie diet.
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