150ml/5fl oz sieved raspberry purée (you could also use strawberry)
2-3 tbsp coffee essence
100g/3½oz caster sugar
100g/3½oz raisins soaked in 4 tbsp rum for 2 hours
100g/3½oz stem ginger, chopped, plus 4 tbsp syrup from the jar
1 tsp vanilla extract
300ml/½pint double cream
4 free-range eggs, separated
2 tbsp brandy