Coat scoops of ice cream in this easy sauce, then watch as it hardens into the perfect shell. It makes an excellent finishing touch for our Tropical-Fruit Cones.
Combine chocolate and oil in a heatproof bowl set over (not in) a pot of barely simmering water. Gently stir just until melted and smooth. Remove from heat; let cool about 20 minutes. (It should thicken slightly but still be pourable; if too thick, return bowl to simmering water 10 to 15 seconds.)