Coarsely chop the chocolate coating and melt in a hot water bath. Cool down for about 15 minutes
Cream butter, lukewarm plate-fat and icing sugar for about 6 minutes. Stir in espresso powder briefly. Gradually stir in the liquid chocolate coating while stirring
Pour the cream into a piping bag with a medium-sized perforated spout and squirt into the praline cups. Chill for about 2 hours until the cream is firm. Dust with cocoa