Clean the mushrooms if necessary and dice them into cubes of 2mm.
Suer the shallots and garlic in butter over a low heat until translucent.
Add the diced mushrooms, lemon juice, salt and pepper and cook for 7- 8 minutes until the liquid, produced by the mushrooms, has completely evaporated.
Add the chopped chives and adjust the seasoning.
Notes
It is recommended to wipe mushrooms with a wet cloth to remove any trace of soil or straw.
The acidity from the lemon juice prevents oxidation of the mushrooms but do not add too much as it may turn the colour of the mushrooms to yellow and the flavour will become too acidic.