Cut the meat into thin slices, then season with salt and pepper. Peel the onions and cut into slices.
Whisk the red wine, sour cream, ketchup, herbs and Worcestershire sauce together.
Put some sauce in a greased baking dish, layer a layer of meat and cover with onions. Keep layering in this order until all the ingredients have been used up. Finish with the sauce and place the bay leaves on top.
Cover and braise in a preheated oven at 200 ° C top / bottom heat for approx. 1 ½ hours.