Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
 250      gram          mushrooms -- (or more)
                        butter
     1/4  liter         heavy cream
   2                    garlic cloves -- or more
                        salt and white pepper

Preparation:

Slice the mushrooms and cut the garlic in little pieces. Melt some butter in a saucepan, add garlic and a little later also the mushrooms and stew it for a while until the mushrooms are no longer raw. Add the cream and reduce the sauce by letting it boil/simmer. Finally add pepper and salt to your taste. You can use some (potato) starch if you prefer the sauce less fluid. I usually serve this with Tagliatelle.