I often cook meat that isn't as tender in the first place. Then even the toughest meat will be wonderfully tender. Here I have used a sautéed beef roast, Which I have browned quickly on all sides and put in a baking dish, along with 4 onions in large strips, 4 carrots in slices, 3 dl of water and 4 bay leaves.
Under a vacuum:
If you want to cook the beef roast in sous vide, vacuum it together with a little oil, pepper and laurel and put it in sous vide at 55 degrees for 48 hours. Then quickly brown it on all sides in a frying pan.
Sauce:
When the time comes for the meat to be taken out, I start with the sauce.
4 tablespoons butter
4 ss mel
Separated power from the roast beef
4 tbsp beef stock
1 dl cream
Salt and pepper
Melt butter in a saucepan, let it turn golden brown. Add flour and fry it together with the butter until it gets a golden nut color. It is important for the taste, that you use the time it takes and brown it well. Stir in the strained power from the roast beef little by little while stirring. Add beef stock and a cream. Season with salt and pepper.

Cut the roast into thin slices, serve with the delicious sauce, freshly cooked potatoes or a delicious mashed potato, the vegetables from the roast and e.g. cauliflower, romanesco or other vegetables you like.