In a small saucepan, combine whipping cream, vanilla, and salt. Heat until hot and starts to bubble.
Remove from the heat and pour over the chocolate chips. Mix it thoroughly with a spatula or whisk and cover with plastic wrap. Keep mixing ganache until it reaches a smooth consistency.
Cool completely, about 1-3 hours in the refrigerator.
Using an electric kitchen mixer with a whisk attachment on medium speed, beat the ganache until fluffy and forms stiff peaks, about 5 minutes.
Transfer to a piping bag with a metal piping tip.
Video
Notes
The recipe makes enough frosting to decorate 12 cupcakes.