Organic pearl barley is a cereal grain that contains fibre and a range of naturally occurring vitamins and minerals, including B vitamins, iron and magnesium. IngredientsPearl Barley Grain Nutrition Typical values Per 100g Energy (kJ) 1326 Energy (kcal) 313 Fat 2.2 of which saturates 0.5 Carbohydrate 63.8 of which sugars 5 Fibre 10.7 Protein 9.4 Salt 0.