Cut the tenderloin into steaks, salt and pepper to taste.
Each steak is placed in a tightly sealed bag and placed in cold water for 10 minutes, this will create the affect of vacuum.
Season the meat with thyme and coat with vegetable oil. Melt the butter in a pan.
Fry steaks until golden brown on both sides with rosemary.
Serve with any garnish or just sauce. Bon Appetit!!!