Peel, wash and finely dice the potatoes. Peel and finely dice the onion. Sauté potatoes and onion in olive oil and deglaze with wine and broth. Simmer for 10 minutes. Meanwhile wash the herbs, dab dry and pluck the leaves from the stalks.
Put some basil leaves aside for decoration. Roughly chop the herbs and mix with softened butter. Remove some potato pieces from the soup and put aside for garnishing. Stir the double cream, except for 1 level tablespoon, into the soup and bring to the boil again. Add herb butter to the soup. Puree the soup finely. Season to taste with salt, pepper, nutmeg and lemon juice. Arrange soup in soup bowls. Pour some double cream on the soup and draw fine streaks with a wooden stick.
Add herb butter to the soup. Puree the soup finely. Season to taste with salt, pepper, nutmeg and lemon juice. Arrange soup in soup bowls. Pour some double cream on the soup and draw fine streaks with a wooden stick. Garnish with potato pieces and basil leaves