BANANA AND MANGO SMOOTHIE

1/2 ripe mango 1 small ripe banana, sliced 150 ml (5 fl oz) semi-skimmed milk 120 ml (4 fl oz) orange juice 2 tsp lime juice 1 tsp caster sugar 2 heaped tbsp vanilla frozen yogurt sprigs of fresh lemon balm to decorate (optional) Peel the skin from the mango and cut the flesh away from the stone. Chop the flesh roughly. Put into a blender with the banana. Add the milk, orange juice, lime juice, sugar and frozen yogurt and blend on maximum speed for about 30 seconds or until mixed and frothy. Pour banana and mango shake into glasses and serve immediately, decorated with sprigs of lemon balm, if you like.