Step 1

Place all of the herbs and seasoning into the oil and stir gently to combine. Rub the pork sirloin roast with the herbed oil, and carefully place into a vacuum bag designed for cooking. Seal according to manufacturer's directions, and place into a preheated 150 degree sous vide machine.

Step 2

Let cook for 4-6 hours. Remove from sous vide machine, and reserve any liquid from the pouch. Quickly sear over high heat on all sides. Slice and serve.

Step 3

Melt butter in a medium saucepan. Whisk in the flour, and cook over medium-low heat for 2-3 minutes, whisking constantly.

Step 4

Slowly stir in liquid from the pork roast and milk. Whisk to combine and continue heating increasing the heat to medium and stirring constantly until thickened.

Step 5

Season to taste, add bouillon and stir until dissolved if desired.