Dab the fillet dry and halve it lengthwise. Cut into thin slices. Clean, wash and slice the mushrooms. Dice bacon. Peel shallots and halve if necessary.
Fry the bacon in 1 tablespoon of hot oil and remove. Heat 2-3 tablespoons of oil in the frying fat. Sauté meat in it in portions. Season with salt and pepper and take out. Then fry shallots and mushrooms for 2-3 minutes. Dust with flour and sauté briefly. Deglaze with 1 1/4 l water, wine and cream, bring to the boil. Stir in broth, thyme and simmer for about 5 minutes. Stir more often
Add bacon and meat and heat. Refine with crème fraîche. Season to taste, arrange and garnish