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Dessert

Mocha Tart

A baked tart with coffee-flavored batter and whipped cream topping.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓

Mocha Tart

Oven, in the book's wordsA cool oven

Ingredients

Directions

The book says “a cool oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the batter

  1. Preheat the oven to 300°F (150°C).

  2. Separate the eggs.

  3. Beat the yolks until creamy.

  4. Add the sugar to the yolks and cream together.

  5. Mix in the coffee extract, flour, baking powder, and vanilla.

  6. Fold in the beaten egg whites gently.

Bake and layer

  1. Divide the batter into two layers.

  2. Bake until set.

  3. Whip the cream until stiff.

  4. Add sugar and coffee extract to the whipped cream.

  5. Layer the baked tart with the whipped cream.

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.

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

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

  2. Coffee + vanillatop 9% of all pairs
    Smell alikemoderate
    Cooked together1,391 recipes

    Shared aroma: sotolon (curry, maple).

  3. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  4. Flour + vanillatop 12% of all pairs
    Smell alikemoderate
    Cooked together19,241 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

Eggs
Whipped whites give the batter lift and an airy, light structure as the tart sets.
Flour
Provides the starch and gluten that set the batter into a firm, sliceable crumb.
Baking powder
Releases gas during baking to raise the batter and keep the layers light.
Heavy cream
Whipped into stiff peaks, it adds richness and a creamy filling between the layers.
Coffee extract
Supplies the mocha flavour in both the batter and the whipped cream.

The step that matters

Fold in the beaten egg whites gently. Deflating the whites by stirring too hard releases the air that makes the batter rise, leaving a dense, flat layer. Gentle folding keeps the foam intact.

Swap the vanilla

How well each one fits the dish's main ingredients (egg, sugar, flour, coffee, cream):

  1. Vanillathe original
  2. Raisinfits about as well
  3. Figfits less well
  4. Strawberryfits less well

Fit is the average pairing score against egg, sugar, flour, coffee, cream. Candidates are from the same food group and used in at least 100 recipes.

“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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