Bring the milk to the boil, remove from the stove and stir in the contents of the bag. Stir again for about 1 minute. Leave to swell for 10 minutes. Peel bananas. Heat butter in a pan. Sauté the bananas briefly.
Spread bananas with honey and roll in pistachios. Cut bananas into 3 pieces. Arrange rice pudding and bananas on plates. Pour some fruit juice over them. Add the rest