Bring the chicken stock to a boil, add the shredded lettuce, and boil for 5 minutes.
Onion Ballet: In a separate pan, sweat the chopped onion in butter for 3 minutes until soft.
Green Harmony:
Pour the lettuce and stock into the onion pan.
Season the mixture with freshly grated nutmeg, salt, and pepper.
Simmer for an additional 5 minutes until the onion is very soft.
Silken Transformation:
Purée the mixture in a blender or food processor, then return it to the saucepan.
Milk Integration:
Stir in the milk to achieve a silky texture.
Egg and Cream Crescendo:
In a separate bowl, whisk together the egg yolk and single cream.
Gradually whisk in a little of the hot soup.
Pour the mixture back into the saucepan and heat through, stirring continuously.
Avoid boiling to prevent curdling.
Serve with Elegance:
Ladle the Velvety Green Symphony into warm bowls.
Garnish with a sprinkle of fresh chives or a drizzle of olive oil if desired.
Serve the soup hot.
Notes / Tips / Wine Advice:
Wine Advice:Pair this elegant Velvety Green Symphony with a light and crisp Sauvignon Blanc or a Pinot Grigio. The wine's acidity will complement the fresh and delicate flavors of the soup, creating a refined and delightful pairing. Cheers to refreshing sips and gourmet moments!