Gingerbread Fudge

Ingredients

• 3 tablespoons unsalted butter
• 1 cup sugar
• 1 cup light brown sugar (packed)
• 1/4 cup molasses
• 1/4 cup light corn syrup
• 1/2 cup whipping cream
• pinch of salt
• 1/2 teaspoon cream of tartar
• 2 tablespoons instant espresso powder dissolved in 1/4 cup water
• 6 ounces bittersweet chocolate, (finely chopped)
• 1 teaspoon vanilla extract
• 1/2 teaspoon ground cinnamon
• 1/4 teaspoon ground ginger
• 1/4 teaspoon ground cloves