Cut mango fruit halves from the stone. Cut 4 slices from one mango half and put aside for decoration. Peel and puree the mango pulp. Stir the gelatine into the buttermilk with a whisk.
Continue stirring for one minute. Stir in sugar and mango puree. Layer the mango-buttermilk cream alternately with the grated chocolate in glasses. Chill for about 10 minutes. In the meantime, remove curls from the chocolate coating with a peeler.
Whip the cream until stiff and fill into a piping bag with star-shaped spout. Pour a small cream tuff into each jar on top of the cream, decorate with mango wedges and the chocolate curls.