Double Chocolate-Marshmallow Milkshakes

From Food Network Magazine in an article promoting Bobby Flay's book, "Burgers, Fries & Shakes."

• Ready In: 15 mins
• Yields: 4 milkshakes

Ingredients

• 1⁄2 cup heavy cream
• 1⁄4 cup marshmallow cream
• 1⁄8 teaspoon vanilla extract
• 1  cup  whole milk
• 1⁄4 cup  chocolate syrup
• 3  cups chocolate ice cream
•  grated bittersweet chocolate (for garnish)

Directions

1. Whisk together the heavy cream (ideally extra-cold), marshmallow fluff and vanilla extract until stiff peaks form. Set aside.
2. In a blender, combine milk and chocolate sauce. Add ice cream and blend until smooth.
3. Fill 4 glasses one-quarter of the way with the shake; add some marshmallow cream, then more milkshake, then cream, then milkshake. Finish with a dollop of marshmallow cream and garnish with grated bittersweet chocolate.