Mix cornflour with two tablespoons of milk and add this to rest of the milk. Pour the milk into a deep non stick pan, add sugar and bring to a boil. Reduce heat and cook, stirring continuously, for three to four minutes.
Set aside to cool completely. Add cream, rose petals and rose essence and mix well. Pour into a shallow container and freeze till almost set. Remove from refrigerator and whisk till smooth. Add almonds and mix. Pour into kulfi moulds, close with the lids and freeze till firm. Serve chilled.