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Marshmallow Fluff

Use as a spread, on a cake or just eat with a spoon!

2/20/2025

Ingredients:

  • 3 large egg whites , at room temperature

  • ½ teaspoon cream of tartar*

  • ¾ cup (7½ oz/213 g) corn syrup*

  • ¾ cup (6 oz/171 g) granulated sugar

  • ⅓ cup (2½ fl oz/75 ml) water

  • 1 teaspoon extract of choice

Basic Cost to make: Approx £TBC
Makes approx 6 Cups

Equipment:

  • Stand mixer with whisk attachment

  • Scales

  • Saucepan

  • Candy Thermometer

  • Spatula

  • Piping bag

  • Jars or cups

Method:

  • In the bowl of a stand mixer fitted with a whisk attachment (thoroughly cleaned and grease free) add the egg whites and cream of tartar. Set aside.

  • In a medium sized heavy bottom saucepan add the corn syrup, sugar and water. Heat the mixture over low heat stirring constantly until the sugar dissolves, about 2 minutes. Once the sugar has dissolved, bring to a simmer and insert a candy thermometer. (This tool is essential in this recipe).

  • Allow the mixture to simmer until the thermometer reads 240℉ (120℃), about 7 minutes.

  • Once your sugar mixture has reached the desired temperature, remove it from the heat and set aside.

  • With the mixer on medium speed, whip the egg whites until you achieve soft peaks, around 3 minutes.

  • Very slowly and carefully pour the sugar syrup into the whites in a thin, steady stream. (If your sugar mix has firmed up , put it back on the heat to liquify it).

  • Once all of the syrup is in, increase the speed to medium-high and continue whipping for 6-8 minutes or until the mixture is thick and glossy. (The whites will deflate at first, but they will eventually thicken and fluff up).

  • Add in the vanilla extract and continue whipping until the fluff has cooled completely.

Notes:

  • Use your marshmallow fluff to decorate cakes or cupcakes. Store leftovers in an airtight container at room temperature for up to 6 weeks.

  • The sweet spot for this is getting the stream right between the whisk and the sides of the bowl, so the syrup doesn't get splashed by the whisk.

  • There are no substitutes for cream of tartar. It is an important ingredient in this recipe and cannot be left out

  • Replacing Corn Syrup: Golden syrup would work but just know it will turn your fluff a darker color. It won't come out white. You can also use glucose syrup or other invert syrup.

  • If the Fluff starts to separate the egg white it can be whisked to reincorporate. Ensuring enough whisking time should prevent this

  • To make vegan - use Egg replacer or aquafaba

Bigger Bolder Baking recipe: https://www.biggerbolderbaking.com/homemade-marshmallow-fluff/