Bring the white wine and the stock to the boil in a pan, add the creme fraiche, tarragon, honey, salt, pepper and mushrooms. Place the Bordelais fillet in an ovenproof dish, add the boiled sauce and cook in the oven for about 1 hour. The sauce is very thin at the beginning, but it gets a nice consistency.
Rice tastes best with it, but also baguette.
In this way, the fish fillet is easily enough for 2 people.