Keep sous vide turkey breast in packaging - do not cut open! Bring a large pot with enough water to submerge turkey breast in its bag to a simmer over medium heat. Preheat oven to 375 degrees and prepare a baking sheet with foil or use a large casserole dish. Thoroughly rinse produce and pat dry. In a mixing bowl, combine chicken base and 1 cup warm water. Stem and mince rosemary, thyme, and sage. Place minced herbs (reserving a bit for garnish) into a bowl with 2 Tbsp. of olive oil and gently mash herbs with a spoon to fully release their flavorful oils.

Submerge packaged sous vide turkey breast in the simmering water, reduce heat to low, and simmer for an additional 20 minutes. (If you accidentally open the packaging, place it in a food-safe sealed plastic bag.) Remove pouch from water and cut a small corner of the pouch to carefully drain juices into a small bowl and set aside for making gravy. Remove turkey breast from pouch. Brush oil and herb mixture over breast, place on baking sheet and roast for 5-6 minutes or until herbs become aromatic. Remove from oven and allow to rest on cutting board.

Melt butter in a small pan over low heat. Whisk in 2 Tbsp. of flour and cook until mixture begins to brown, stirring constantly. Whisk in chicken stock, heavy cream, sherry, reserved turkey juices, and a pinch of salt and pepper. Keep warm over very low heat until ready to serve.

Slice turkey into ¼" thick slices and arrange on a serving platter. Place gravy in a gravy boat or serving dish. Garnish with reserved fresh herbs. Did you know that the first TV dinner was created because Swanson over-ordered 260 tons of turkey during Thanksgiving and had to think of a way to sell it? You won't have that problem here!