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Dessert

Rose and Lemon Toffee

A sweet confection made by boiling sugar with cream of tartar, flavored with saffron, lemon essence, cochineal, and rose oil.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Saffron and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 538 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Rose and Lemon Toffee

Ingredients

Directions

  1. Boil 7 lbs of lump sugar and ½ oz of cream of tartar until it reaches the crack stage.

  2. For lemon toffee, add a little saffron and essence of lemon, then pour into tin frames or on a pouring plate.

  3. For rose toffee, color with cochineal and flavor with a few drops of otto of roses, then pour in the same manner.

  4. When the toffee is poured, mark it with a knife to create bars before it cools completely.

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. Saffron + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together538 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  2. Saffron + rosetop 9% of all pairs
    Smell alikemoderate
    Cooked together78 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

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

  4. Lemon + rosetop 13% of all pairs
    Smell alikelow
    Cooked together1,174 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Lump sugar
Forms the main body of the toffee and sets into a brittle, glassy texture as it cools.
Cream of tartar
Acid that helps keep the sugar smooth and prevents crystallization during boiling.

The step that matters

Marking the toffee before it cools completely. Once the sugar cools and hardens, it becomes brittle and can crack unevenly, so bars must be scored while it is still warm and pliable.

Swap the lemon

How well each one fits the dish's main ingredients (sugar, cream, saffron, rose):

  1. Vanillafits better
  2. Lemonthe original
  3. Orangefits about as well
  4. Raisinfits less well

Fit is the average pairing score against sugar, cream, saffron, rose. 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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