Heat the butter and oil in a pan on a medium-high heat.
Dice shallots finely, then sauté for 5 minutes until softened.
Slice the chestnut mushrooms & add to the pan with a large pinch of salt. Cook for 10 minutes to draw out their moisture.
Mince the garlic + add with 1tbsp of fresh thyme leaves - fry until fragrant.
Once the mushrooms are caramelising, deglaze the pan with white wine.
When the wine has evaporated, add the flour + cook out for 2 minutes.
Prepare your stock, then add gradually, stirring as you go.
Add the miso paste + mustard, then leave to simmer on a medium-low heat until thickened (15-20 minutes).
Add the cream, stir well & season to taste.
Tear the oyster mushrooms into strips, then fry in a hot oiled pan until crispy.
Ladle the soup into bowls, top with the mushrooms, fresh parsley, a swirl of cream + a pinch of paprika.
Serve with buttered toast or warm bread + enjoy!