Dark Chocolate Rum Truffles

8 ounces dark sweet chocolate
2/3 cup heavy cream
2 1/2 tablespoons dark rum
1/4 tablespoon lime juice

16 ounces dark sweet chocolate
2 tablespoons vegetable oil

Slivered lime peel

When chocolate and cream ganache have cooled to room temperature, add rum and lime juice before refrigerating. Top dipped truffles with slivers of lime peel.