30 g butter
250 g brown mushrooms
2 garlic cloves, crushed
a sprig of rosemary, chopped
a splash of sherry or white wine
250 ml cream
coarse salt to taste
freshly ground black pepper
Fry mushroom, garlic and rosemary in butter until browned. Season with some salt.
Add a splash of sherry and simmer for a minute.
Add cream and bring to a simmer over low heat until reduced.
Season to taste.