For the compote, drain the lychee and collect the juice. Boil 100 ml juice with sugar in a saucepan and simmer for about 5 minutes until syrupy. Remove from the heat and stir in vodka. Cut lychees in half if necessary. Sort the raspberries, wash if necessary and crush them slightly. Mix with lychees and the syrup, let cool.
Let the ice thaw a little. Roughly chop the sesame bar. Form 4 large balls from the ice. Serve with lychee compote and sprinkle with brittle. Serve immediately.