Hot-Fudge Sauce

This hot fudge sauce uses two types of chocolate for a deeper, more complex flavor than single-chocolate versions. Unsweetened chocolate brings the intense, bitter cocoa punch while semi-sweet chocolate rounds things out with smoother sweetness. Together they create a sauce that’s rich without being cloyingly sweet.

Melting the chocolates with sugar and corn syrup over low heat is key. Low heat prevents scorching, which turns chocolate grainy and bitter. The corn syrup does double duty here: it adds glossy shine to the sauce and keeps the sugar from crystallizing, so the texture stays silky smooth instead of grainy.

Butter, water, and vanilla go in after the chocolate melts, creating the final emulsion. The butter gives the sauce its luxurious body and the water loosens it to a pourable consistency. Hot off the stove, this pours like a dream over ice cream and sets into that signature fudgy layer as it cools on the cold surface.

Pro Tips

• Low heat the entire time. Chocolate burns easily and there’s no fixing it once it does. Keep the flame as low as it goes and stir frequently.
• Stir until completely smooth after adding butter and water. Any streaks of unincorporated butter will separate as the sauce cools.
• Serve immediately for the best pour. Hot fudge sauce thickens quickly as it cools. It’s still great reheated, but the fresh-off-the-stove consistency is unbeatable.
• Refrigerate for up to two weeks. Reheat gently in a saucepan or microwave in short bursts, stirring between each.

Variations

• Espresso hot fudge: Dissolve a teaspoon of instant espresso powder into the water before adding for a mocha-flavored sauce.
• Salted fudge: Add a generous pinch of flaky sea salt at the end for a sweet-salty combination.
• Boozy version: Stir in a tablespoon of bourbon, rum, or Kahlua after removing from heat.