Velvety Chocolate Fudge Sauce

1. Combine Sugar, Milk, and Salt

In a medium saucepan, combine the sugar, whole milk, and table salt. Place the saucepan over medium-low heat and gently whisk the mixture until the sugar dissolves and the liquid starts to bubble around the edges of the pan. This should take about six minutes. This step is crucial as it ensures the sugar fully dissolves, creating a smooth base for your sauce.

2. Add Cocoa Powder

Once the mixture is bubbling, reduce the heat to low. Sift in the unsweetened cocoa powder and whisk until the mixture is smooth. The reduction in heat prevents the cocoa from burning and ensures it blends seamlessly into the liquid.

3. Melt Unsweetened Chocolate

Remove the saucepan from the heat and immediately add the finely chopped unsweetened chocolate. Stir the chocolate into the mixture and let it sit for three minutes. This rest period allows the chocolate to melt evenly, ensuring a rich and velvety texture.

4. Incorporate Butter and Vanilla

After three minutes, whisk the sauce until the chocolate is completely melted and the mixture is smooth. Add the chilled butter pieces and the vanilla extract. Continue to whisk until the butter is fully incorporated and the sauce thickens slightly, appearing glossy. Adding the butter and vanilla off the heat prevents separation and enhances the sauce’s richness.