Both times I tried it, this resulted in a bit of mayhem with guests telling me that I should let it be, it would be too much effort, that they didn't want dessert anyway. Followed by a stunned silence when, 5 minutes later, fresh churned ice cream emerged from the ice cream maker. Then one time, it also became a bit of a crowd puller as fascinated friends stood by the kitchen counter watching my bowl of liquid cream turning into frozen dessert.
The ice cream base itself is so easy to make that it should count as cheating. The recipe comes from David Lebovitz of course. You need about 10 minutes the morning of the dinner party.
First, make sweetened sour cream by mixing 2/3 cup milk, 1/3 cup cup sour cream and 1/4 cup caster sugar in a blender. Add 2 tsp of kirsch or vodka, mix to combine and leave in the fridge until show time.
Separately, whisk together 1/3 cup triple sec with 1/4 cup caster sugar and zest of an orange until the sugar dissolves. Stir in 2-3 cups of mixed berries, turn a few times to coat the berries in liquid and leave to marinate in the fridge. That's it; your prep is done. If you have a cheap ice cream maker like I do, you will probably also need to make sure that the bowl is sitting in the freezer at this time.
All you do at dinner is take both the bowls out. Churn the sour cream in the ice cream maker for 5-10 minutes until its frozen, scoop it out and top with berries.