Melt the butter in a large saucepan. Add the onion and leeks, cook on a low heat for 5 minutes or until the vegetables are soft and translucent. Add the flour and cook for 1 minute. Gradually add the milk followed by the stock, stirring continuously.
Add the broccoli florets, wholeBlack Garlic cloves and the bay leaf to the saucepan.
Bring the soup to the boil, simmer for 5 – 10 minutes or until the broccoli is soft. Remove the bay leaf.
Reduce the heat then add the cubed Brie, stirring until the cheese has melted.
Liquidise the soup in a blender or with a hand blender until smooth. Season to taste with salt and white pepper.
When ready to serve, add the cream and reheat gently without letting the soup boil.
Ladle the soup into bowls. Garnish with a swirl of cream, a little finelysliced Black Garlic clovesand some snipped chives.