The correct name of this food is Pork with Sage Sauce. Requires R15 Cooking, and needs 1x Wine Vinegar, 1x Pork, and 1x Sage for 2x of this food. Fatigue/Recovery Food +75 and it's Fleet vigour foods.
Comes from new recipe book Medieval Court Cuisine Collection
Medieval Court Cuisine Collection under the name "Cooking Salt Pork".