Bring the chills to your Halloween party with this freaky Frankenstein margarita. Green goo gives this cocktail a colorful lime-infused surprise.

Why this recipe works

Green goo meets a refreshing margarita loaded with tequila and lime juice in a black lava salt rimmed glass. This Frankenstein margarita is always a conversation starter, especially when you serve the goo in syringes!

Making Halloween cocktails is a fun way to liven a party up in true festive spirit. Serve this margarita up with a spiderweb cocktail while you’re at it as another spooky sipper for your guests!

Ingredients you will need

Get all measurements, ingredients, and instructions in the printable version at the end of this post.

Ingredient Info and Substitution Suggestions

GREEN GOO – Cold water, cornstarch, corn syrup, fresh lime juice, fresh lime zest, and green gel food coloring is simmered and cooked together. Don’t skip out on the green goo, it’s super easy to make and takes under 5 minutes to make. The goo really ties together the whole drink and adds that beautiful green color reminiscent of Frankenstein. The green goo will yield about 1 cup – which is enough for 5 syringes with 1 1/2 oz in each. You will only need 1 syringe per cocktail, unless you’d like an extra for garnish.

MARGARITA – The recipe card below provides measurements for one margarita. Simply double or triple the ingredients to make more. Silver, blanco, or white tequila is needed – you want it to be clear.

How to Make a Frankenstein Margarita

These step by step photos and instructions are here to help you visualize how to make this recipe. You can Jump to Recipe to get the printable version of this recipe, complete with measurements and instructions at the bottom.

To make the green goo, whisk together the cold water and cornstarch in a small bowl to form a slurry.
Whisk together the corn syrup, cornstarch slurry, lime juice, lime zest, and green gel food coloring in a medium saucepan over medium heat.
Bring to a simmer and then cook for 30 seconds, whisking constantly. Remove from the heat and cool to room temperature.
Rub the rim of a margarita glass with a lime wedge. Dip the glass in the black lava salt.
Shake or stir together the tequila, lime juice, and Green Goo, and pour into the salt-rimmed glass. Serve.

Frequently Asked Questions & Expert Tips

Do I have to add the green goo?

No, you do not have to add the green goo, but I highly suggest it as it gives the cocktail that bright green color. The goo is part of this cocktail recipe and is directly added to the margarita itself.

Serving Suggestions

There’s nothing too crazy about this Frankenstein margarita, except for its fun presentation so go ahead and enjoy it as you’d enjoy any other margarita with some appetizers or dinner. Add an extra shot of green goo with your cocktails in a plastic syringe. If you’d rather have a sugar rim, try black sugar.

More Halloween Recipes

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This post was originally published here on October 20, 2021.