NATION"S FAVOURITE GRAVY. Each 50ml serving contains Calories 15 <1%, Sugars 0.5g <1%, Fat 0.6g <1%, Saturates 0.4g 2%, Salt 0.48g 8% of an adult"s guideline daily amount. Bisto is The Nation"s favourite gravy so we know how important it is to making your meal a success. That"s why we"re dedicated to helping you get the gravy right every time.