Pour 150 ml of hot water over peppermint tea and let it steep for about 10 minutes. Place in the refrigerator and let it cool down. Add liqueur as desired. Stir yoghurt, crème fraîche and peppermint tea until smooth.
Stir in icing sugar and san-apart. Set four of the chocolate mint bars aside for decoration, chop the remaining bars into small pieces and fold them into the cream. Pour cream into four dessert glasses and chill for 10 minutes.
Decorate with mint tablets and mint leaves.