Soak gelatine in cold water. Wash the orange and lime, finely grate the peel. Halve the fruits, squeeze the juice
Mix buttermilk, 100 g sugar, orange and lime peel and juice well
Squeeze out the gelatine, dissolve over a mild heat, mix with 2-3 tablespoons of buttermilk. Stir into the remaining buttermilk and fill into 4 dessert glasses. Leave to set in the fridge for 3-4 hours
Defrost the raspberries. Puree the fruits, except for some for decoration, and pass through a fine sieve. Season to taste with sugar and vanilla sugar. Arrange on the jelly and sprinkle with the rest of the raspberries. Decorate as desired with orange and lemon balm