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Dessert

Marshmallow Filling

A sweet filling made from sugar, milk, marshmallows, hot water, and vanilla.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Marshmallow Filling

Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. The science ↓

Marshmallow Filling

Ingredients

Directions

Make the filling

  1. In a saucepan, combine hot water and sugar. Bring to a boil until it forms threads when dropped from a spoon.

  2. Add the milk and marshmallows, stirring until dissolved.

  3. Continue boiling until the mixture thickens slightly.

  4. Remove from heat and stir in the vanilla.

Finish and spread

  1. Let cool slightly before spreading between layers and on top and sides of the cake.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Photo for illustrative purposes only · Contact us to use it

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Milk + vanillatop 5% of all pairs
    Smell alikemoderate
    Cooked together19,187 recipes

    Shared aroma: ethyl caproate (fruity, apple peel).

  2. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  3. Sugar + milktop 18% of all pairs
    Smell alikelow
    Cooked together77,875 recipes

    Shared aroma: 2-nonenal (fatty, green).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sugar
Sweetens the filling and, boiled with water, forms the syrup that sets the marshmallow base.
Marshmallows
Provide the body and soft, spreadable texture once melted into the syrup.
Milk
Loosens the mixture so the melted marshmallow blends smoothly and spreads easily.

The step that matters

Boiling the sugar syrup to thread stage. Sugar syrup must reach the thread stage so it sets properly once cooled. Boiling too little leaves the filling runny, while boiling too long makes it stiff and hard to spread.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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