Name: How to Make Marshmallow Fluff
Prep time: 10 min
Cook time: 10 min
Total time: 20 min
Yield: 6 Servings
Cuisine: American

It is a Keeper Verified

February 18, 2026

Wondering how to make marshmallow fluff? This homemade fluff recipe is your ultimate guide to creating that perfect, cloud-like confection. Whether you’re a novice in the kitchen or a seasoned pro, our recipe promises to deliver sweet satisfaction every time. If you’ve been curious on how to make marshmallow fluff, then you’ve come to the right place! Making homemade marshmallow fluff is an experience worth embarking on. Not only does it allow you to customize the flavors to suit your taste buds, but it also gives you the satisfaction of creating something delightful from scratch.

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How to Make Marshmallow Fluff

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Ingredients

WarningEggs allergen identified

Instructions

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Instructions

Ensure mixer bowl and whisk are completely grease free, you can wipe the inside out with a bit of vinegar or lemon juice to make sure it’s super clean.

Place egg whites and cream of tartar in the bowl of a stand mixer.

In a heavy bottom sauce pan, add water, sugar, and corn syrup.

Stir to combine and let the sugar dissolve over low heat.

Do not let this mix simmer until the sugar has dissolved fully.

Insert a candy thermometer into the pot and raise the temperature to medium. Do not stir from this point on as crystals will form.

Simmer this mix about 8-10 min until it reaches 240F (120C) “softball stage” on a candy thermometer.

*helpful tip. The fast popping bubbles will become slow popping bubbles

Remove your sugar mix from the heat once you reach the correct temperature.

Turn your mixer to medium speed and whip the egg whites to soft peaks. Approx 3-4mins.

Reduce speed to medium/low and very slowly pour the sugar syrup into the whites in a thin, steady stream

if your sugar mix has cooled off and begin to firm up pop it back on the heat to make it liquid again

Once all of the syrup is in, increase mixer to medium/high and continue whipping. The egg whites will deflate and then they will thicken and puff up.

Continue to whip for 6-8 minutes, or until the mixture is thick and glossy.

Add in vanilla and whip until the fluff has cooled.

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Tips & Tricks (5)

Sugar Syrup Precision 🍯
Use a candy thermometer to ensure the sugar syrup reaches exactly 240°F (soft-ball stage) for perfect marshmallow fluff consistency.
Egg White Technique 🥚
Ensure your egg whites are at room temperature and free from any trace of yolk to achieve maximum volume and stability.
Clean Equipment Magic 🧼
Thoroughly clean and dry all mixing equipment with white vinegar to remove any grease that could prevent egg whites from whipping properly.
Gradual Sugar Incorporation 🍬
Stream the hot sugar syrup slowly down the side of the mixing bowl while whipping to prevent scrambling the egg whites and ensure smooth integration.
Storage Perfection 🫙
Store homemade marshmallow fluff in an airtight container in the refrigerator for up to 2 weeks, bringing to room temperature before use.

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About the Cook

It is a Keeper

Hi! I’m Christina… welcome to my kitchen! It’s so nice to meet you! I share tried and true recipes that anyone can make. I believe, if you can read, you can cook.