Cooking Time: 48 hours for tender ribs, 72 hours for fall off the bone tender.
Serves:4

Ingredients:
4 Beef Short Ribs, on the bone, 6-8 inches/15-20cm
2T Rendered Beef Fat per portion (Olive Oil may be substituted)
2C (473mL) Beef stock or favorite marinade
4 Sprigs of Thyme
1t Roughly Chopped Black Peppercorn
Kosher Salt and Coarse Ground Black Pepper to taste.
Olive oil or butter for searing.

Step One:

Set the Sous Vide Professional to the 57.2°C/135°F, with rear pump flow switch closed and front flow switch set to full open.

Step Two:
Season beef short rib portions with kosher salt and coarse ground black pepper.

Step Three:
In a hot pan, grill or plancha, sear off beef short ribs until Maillard reaction has taken place. The optimal result is to have even browning on all sides. Basting the ribs in foaming butter will result in desirable coloring and optimal flavor.

Step Four:
In a medium or large vacuum bag, place seasoned, trimmed portion of beef short rib and evenly distribute beef fat (or olive oil), thyme sprigs, black pepper and cooking liquid amongst portions.

Do NOT use dairy products, such as butter, in cook times exceeding 4 hours.

Step Five:
Vacuum seal portions to 90-95%.

Step Six:
Once target temperature of 57.2°C/135°F is reached, place sealed short ribs in circulating water bath. Allow for at least 50% food to water, 1:1 ratio to ensure optimal circulation. Never overcrowd a circulating bath.

Step Seven:
Cook to desired doneness for 48-72 hours. Internal temperatures should reach a temperature of 57.2°C/135°F, for medium rare beef. Longer cook times are necessary with tougher cuts of beef to allow time for muscle fibers to fully break down.

Step Eight:
Remove the beef short ribs from vacuum bag. To obtain more browning or crust, beef short ribs may be seared in a hot pan or be placed in a 230°C/450°F oven for 5-10 minutes, or until desired finish is resulted.

Step Nine:
Beef will require very little resting time. After 60 seconds of rest, beef may be sliced and plated.