1 tablespoon olive oil
15 grams (½ oz) butter
1 onion, peeled and finely chopped
1 clove garlic, peeled and crushed
225 grams (8 oz) button mushrooms, wiped and sliced
150 millilitres (about ½ cup) dry white wine
150 millilitres crème fraîche
1 Tablespoon parsley
1 Tablespoon salt
1 Tablespoon ground black pepper
Heat the oil and butter in a frying pan and add the onion. Cook the onion until softened, but not coloured.
Add the garlic and the mushrooms to the pan.
Cook for 3–4 minutes until the mushrooms are soft but have not released their juices.
3–4 minutes
Add the wine and reduce by half.
Stir in the crème fraîche and parsley, and heat through.
Season to taste.