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Opera Creams

Opera Creams are caramel candies made with sugar, cream, vanilla, fruit, and nuts.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Opera Creams

Why it works: Vanilla and pineapple match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 911 recipes. Both carry ethyl isobutyrate, which smells fruity, ethereal. The science ↓

Opera Creams

Ingredients

Directions

Make the caramel base

  1. In a kettle, combine sugar and cream of tartar.

  2. Add cream and heat until boiling, stirring constantly.

  3. Once boiling, insert a thermometer and cook until it reaches 242°F (117°C).

  4. Pour the mixture onto a damp slab.

Flavor and shape

  1. Add vanilla and let it set for about 5 minutes.

  2. Knead the mixture until smooth like dough.

  3. If desired, color part of the mixture pink and flavor with strawberry, or use melted chocolate or cocoa.

  4. Line caramel pans with wax paper and scatter fruit and nuts on top.

  5. Press the cream mixture into the pans to show the fruit on top.

  6. Turn out, peel off the wax paper, and cut into caramels.

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. Vanilla + pineappletop 2% of all pairs
    Smell alikestrong
    Cooked together911 recipes

    Shared aroma: ethyl isobutyrate (fruity, ethereal).

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

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

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

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

  4. Vanilla + walnuttop 10% of all pairs
    Smell alikestrong
    Cooked together2,730 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Pineapple + walnuttop 13% of all pairs
    Smell alikestrong
    Cooked together465 recipes

    Shared aroma: 1-hexanal (fruit).

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
Forms the bulk of the caramel and, as it cooks, sets the firm, chewy texture.
Cream
Adds fat and moisture, giving the caramel a soft, creamy body.
Cream of tartar
Acidity that helps prevent sugar crystals from forming, keeping the caramel smooth.
Walnuts or pecans
Add crunch and a toasty, nutty contrast to the soft caramel.

The step that matters

Cooking to 242°F (117°C). Caramel firmness depends on how much water has boiled off. Stopping short leaves it soft and sticky, while cooking too far makes it hard. Stir constantly while boiling so the sugar does not scorch on the bottom of the kettle.

Swap the walnut

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

  1. Chestnutfits better
  2. Almondfits better
  3. Macadamia nutfits better
  4. Walnutthe original

Fit is the average pairing score against sugar, cream, vanilla, pineapple. 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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