Making the caramel ganache
Add the butter and 100g of chocolate pieces to the sauce, which is still hot, and stir until the chocolate is completely melted.
We leave the ganache to cool. You can cool it on the table, stirring occasionally, and then place it in a piping bag and pipe triangular truffles.
The second option: cover the container with ganache with cling film and let it freeze completely in the refrigerator. When the chocolate is firm, form the balls with a spoon.