Jack in the Box Eggnog Milkshake (Easy Copycat Recipe)

When Jack in the Box brings back their seasonal eggnog milkshake each winter, fans line up to get their hands on this creamy holiday treat. But what if I told you that you could recreate this beloved milkshake at home with just two simple ingredients? This copycat recipe captures all the rich, spiced flavor of the original without the drive-through wait.

Why This Recipe Works

The magic happens in the perfect ratio of ice cream to eggnog. Too much eggnog and the milkshake becomes thin; too little and you lose that distinctive holiday flavor. This 3:1 ratio creates the ideal consistency that’s thick enough to drink through a straw but smooth enough to blend easily. The vanilla ice cream provides the creamy base while the eggnog delivers that signature spiced, custard-like flavor that makes this milkshake so special.

The Secret to Jack in the Box Flavor

The key to nailing the authentic taste is using high-quality ingredients. Premium vanilla ice cream with real vanilla creates the rich foundation, while a good eggnog (preferably one with real cream and traditional spices like nutmeg and cinnamon) provides the holiday magic. The optional nutmeg garnish isn’t just for looks – it adds that final aromatic touch that makes each sip feel festive.

Ingredients

Main Components:

• Vanilla ice cream – Creates the thick, creamy base and provides rich dairy flavor that balances the spiced eggnog
• Eggnog – Delivers the signature holiday flavor with its blend of cream, eggs, and warm spices like nutmeg and cinnamon

Optional Garnish:

• Ground nutmeg – Adds aromatic spice and authentic holiday presentation when dusted on top

Step-by-Step Instructions

Preparation

1. Remove ice cream from freezer 2-3 minutes before blending to soften slightly for easier mixing.
2. Chill your serving glass in the freezer for extra cold presentation.

Blending Process

3. Add vanilla ice cream to blender first (this helps protect the blender blades).
4. Pour eggnog over the ice cream, ensuring even distribution.
5. Blend on medium speed for 30-45 seconds until completely smooth and creamy.
6. Check consistency and blend additional 10-15 seconds if needed for perfect smoothness.

Serving

7. Pour into chilled glass, leaving room at the top for garnish.
8. Dust lightly with nutmeg using a fine-mesh strainer for even distribution.
9. Serve immediately with a thick straw for best experience.