Dark Chocolate Rum Truffles

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

Dipping:
16 ounces dark sweet chocolate
2 tablespoons vegetable oil

Garnish:
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.