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Dessert

Treacle Sponge

A sponge cake made with golden syrup, suet, flour, milk, baking powder, and lemon rind.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Treacle Sponge

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 350°F (175°C).

  2. Warm the golden syrup and milk together in a basin in the oven.

  3. In a separate bowl, mix the flour, baking powder, and suet well.

Make and cook the cake

  1. Gradually stir the dry mixture into the warm milk and syrup until thoroughly combined.

  2. Pour the mixture into a well-buttered mold.

  3. Tie a floured cloth over the mold and boil for 3 hours.

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. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

  3. Syrup + flourtop 16% of all pairs
    Smell alikemoderate
    Cooked together2,540 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  4. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Syrup + lemontop 20% of all pairs
    Smell alikelow
    Cooked together2,235 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Flour and milk barely smell alike, yet cooks put them together in 78,219 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

Flour
Forms the main structure that holds the cake together as it cooks.
Suet
Adds fat that keeps the sponge moist and gives it a rich, tender crumb.
Baking powder
Releases gas during cooking so the cake rises and stays light.
Golden syrup
Adds sweetness and moisture, and gives the cake its characteristic treacle flavour.
Milk
Hydrates the flour and helps form a batter that sets as it cooks.

The step that matters

Gradually stir the dry mixture into the warm milk and syrup. Adding the dry ingredients slowly and mixing until just combined keeps lumps out and avoids overworking the flour, which would make the cake dense and tough.

Swap the lemon

How well each one fits the dish's main ingredients (syrup, flour, milk):

  1. Vanillafits better
  2. Raisinfits better
  3. Figfits better
  4. Lemonthe original

Fit is the average pairing score against syrup, flour, milk. 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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