Preparation Melt the butter in a medium-size saucepan over high heat, add the garlic and onion and cook until soft, about 2 minutes. Add the Jerusalem artichokes and sauté about 2 minutes. Add the stock and simmer until the chokes are tender. Add the cream and bring back to a boil. Season with salt and pepper. Purée in a blender until smooth. Strain through fine sieve. Keep warm. Sprinkle with the chive. Serve.
Preparation Melt the butter in a medium-size saucepan over high heat, add the garlic and onion and cook until soft, about 2 minutes. Add the Jerusalem artichokes and sauté about 2 minutes. Add the stock and simmer until the chokes are tender. Add the cream and bring back to a boil. Season with salt and pepper. Purée in a blender until smooth. Strain through fine sieve. Keep warm. Sprinkle with the chive. Serve.