Roughly chop the chocolate (or couverture) (this is best done on a large board with a heavy knife). Heat the apple juice in a water bath, add the chopped chocolate and melt while stirring constantly.
Heat the milk in a saucepan, add the almond butter and sweeten with sugar to taste. Stir this mixture into the apple and chocolate juice. Pour into cups or heat-resistant glasses.
Whip the cream until stiff and use the piping bag to decorate the chocolate and apple juice nicely with cream. Scatter the chocolate shavings.