Gravox Gravy Mix. For Pan-Juice Gravy combine 2 tbsp of pan juices with 1 1/2 tbsp of Gravox Gravy Mix. Mix Well. Add sufficient water from 1 cup (250ml) to make a smooth paste. Cook for 1 minute on low heat. Gradually add remaining water. Bring to boil, stir until it thickens into a gravy. Net: 200g Packet