Servings: Makes 64 pieces
Ingredients 1 piece (2 inches) fresh ginger , peeled and very finely grated1/2 cup sweetened condensed milk1/4 cup whole milk6 ounces bittersweet chocolate , finely chopped2 ounces unsweetened chocolate , finely chopped1 stick (8 tablespoons) butter , softened1/8 teaspoon salt
Line an 8" x 8" baking pan with aluminum foil, letting foil extend at 2 sides. Spray with cooking spray.
Wrap grated ginger in a dampened kitchen towel, then squeeze and twist towel firmly over a small bowl to yield scant 2 tablespoons juice.
In a medium saucepan over medium heat, combine sweetened condensed milk and whole milk. Bring to a boil, reduce heat and simmer until slightly thickened, about 3 minutes. Remove pan from heat, add chocolates and let stand 1 minute. Add butter, salt and ginger juice. Whisk until chocolates and butter melt and mixture is smooth. Pour into prepared pan. Let cool, then refrigerate until firm, about 4 hours or overnight.
To serve, lift fudge from pan using foil ends; place on a cutting board. Cut into 1-inch squares.