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Dessert

Rum Taffy

A sweet candy made from sugar, glucose, water, butter, milk, and rum flavoring.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Rum Taffy

Ingredients

Directions

Make the taffy

  1. Combine sugar, glucose, and water in a kettle.

  2. Cook the mixture until it reaches 300°F (150°C).

  3. Add butter and milk, mixing on the fire until the butter is fully dissolved.

  4. Remove from heat and flavor with rum or punch flavor.

Shape and cut

  1. Pour the mixture onto a slab between iron bars and cut into desired shapes.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Milk + rumtop 12% of all pairs
    Smell alikemoderate
    Cooked together967 recipes

    Shared aroma: ethyl 2-methylbutyrate (fruity, apple).

  3. Butter + rumtop 13% of all pairs
    Smell alikemoderate
    Cooked together1,007 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  4. Sugar + rumtop 14% of all pairs
    Smell alikelow
    Cooked together2,908 recipes

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

  5. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

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

What each ingredient does

Sugar
Provides the sweet base and, as it cooks, the body that sets into a chewy taffy.
Glucose
Inhibits sugar crystallization, keeping the taffy smooth and preventing grainy texture.
Butter
Adds fat for a tender, softer bite and rich flavor.
Milk
Adds milk solids that contribute to a softer texture and creamy, browned flavor.

The step that matters

Cooking to 300°F (150°C). The sugar concentration at this temperature determines how firm or chewy the taffy sets. Undercooking leaves it soft and sticky, while overcooking makes it hard and brittle.

“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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