Method Prep:20min › Extra time:3hr freezing › Ready in:3hr20min
Put the fresh raspberries in a pan with the caster sugar and lemon juice and simmer for 15 minutes, stirring occasionally.
In a bowl put the condensed milk and double cream and whisk by hand until the mixture thickens and falls in ribbons off of the whisk.
Next remove the raspberry mixture from the heat and sieve to remove all the pips. This will leave you with a thick sauce.
Now put the condensed milk and cream into a 2L food box and slowly add the raspberry sauce bit by bit, stirring gently with a spatula to create a rippled effect.
Next crush the frozen raspberries into small pieces. Add the frozen raspberry pieces and chocolate chips to the cream, condensed milk and raspberry sauce.