Prick each berry in 5-6 places with a toothpick and place in a bowl. Drizzle generously with dark rum, wrap in clingfilm, and refrigerate for 2 hours.
Chop chocolate, mix with cream and melt in the microwave.
Very carefully take each berry by the tail and dip in melted chocolate, then lay on a silicone mat. Let the chocolate harden completely and serve, not forgetting to warn that there is a bone inside the "candy".