Step 1

Heat a sous vide water bath to 131F degrees.

Step 2

Season the beef with salt and pepper.

Step 3

Combine the beef with the remaining ingredients (except avocado oil and beef stock) in a vacuum seal bag and seal.

Step 4

Cook in the water bath for 36 hours.

Step 5

Remove and reserve the bag sauce in a saucepan.

Step 6

Simmer the bag sauce and add 1/2 to 1 cup beef stock to dilute it as necessary. This will be the jus to serve alongside the beef.

Step 7

Skim the jus while it cooks, or strain after it simmer for about 3-5 minutes.

Step 8

While the jus cooks, heat a skillet over high heat and add the avocado oil.

Step 9

Add the beef to the skillet and sear for 1-3 minutes on each side, until a browned crust forms.

Step 10

Remove from heat, let it cool slightly, the slice and serve with the jus.