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How to make mushroom duxelles
Peel and finely chop your mushrooms, onion and garlic.
Heat a frying pan and melt the butter.
Cook gently until the foam subsides and the butter start to turn a light nut brown colour and nutty aroma.
Add the mushrooms, onion and garlic and stir to coat in the butter. The heat must be adequate so that they will fry gently, but not stew or burn.