Wendy's Hot-Chocolate Sauce

Ingredients

• 1/3 cup plus 1 Tbsp. heavy cream
• Grated zest of 1 lemon (no white pith, please)
• 9 ounces best-quality white chocolate, very finely chopped
• Few grains salt
• 1/4 cup (1/2 stick) unsalted butter, cut into thin slices
• 2 tsp. freshly-squeezed, strained lemon juice
• About 1-1/3 cups very finely chopped pecans