The white chocolate can be replaced with pistoles of caramelized chocolate, also called blond, Dulcey or gold chocolate, which is available in some specialty shops. In this case, omit steps 1 and 2 of the recipe.
Caramelizing white chocolate at this temperature will affect its structure and it will become grainy if left to harden. But it is perfect for use in whipped cream, ganache or panna cotta.