Mango, lime & blackberry bombe

Method

• step 1

  Put the blackberries in pan with 4 tbsp of the sugar, add a splash of water then cook until the berries have softened. Rub through a sieve. Cool then freeze in a plastic container until slushy, stirring every now and then.

• step 2

  Whizz the mango with 75ml of its syrup and 2 tbsp icing sugar until smooth, then freeze in a container until slushy as above.

• step 3

  Stir the rest of the sugar with the lime zest and juice. Beat the cream with 3 tbsp of the remaining mango syrup until it forms soft peaks, then beat in the lime mixture. Freeze in a container until semi-frozen.

• step 4

  Line a medium Pyrex basin with cling film then beat all three icy mixtures and spoon alternately into the bowl to make rippled layers. Return to the freezer until solid.

• step 5

  To serve, pull out of the bowl and strip off the cling film. Put on a plate, scatter with the crushed biscuits and leave for 30 mins to soften in the fridge before eating.