Name: Biscuit Paste
Ingredients: 1 ounce chocolate; hot water; Biscuit Paste (divided into 4 parts); vegetable carmine; saffron

Why it works: Biscuit and saffron share more aroma than cooks usually use. They rank in the top 7% of all ingredient pairs, and cooks put them together in 20 recipes. Both carry nonanal, which smells fat, citrus. The science ↓

Biscuit Paste

Oven, in the book's wordsA moderate oven

Ingredients

Directions

The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare the colors

Dissolve chocolate in hot water.
Mix two‑thirds of the chocolate with one piece of Biscuit Paste.
Mix the remaining third with another piece of Biscuit Paste.
Combine vegetable carmine with a small quantity of saffron for color.
Color one piece of Biscuit Paste light and the other darker.

Assemble and bake

In a paper case, alternate spoonfuls of the four colored pastes.
Bake in a moderate oven at 350°F (175°C) for 2 to 3 hours.

Finish

Once cooled, 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.

Biscuit + saffrontop 7% of all pairs

Smell alikestrong

Cooked together20 recipes

Shared aroma: nonanal (fat, citrus).
Chocolate + biscuittop 15% of all pairs

Smell alikemoderate

Cooked together334 recipes

Shared aroma: nonanal (fat, citrus).
Chocolate + saffrontop 29% of all pairs

Smell alikelow

Cooked together50 recipes

Shared aroma: linalool (floral, citrus).

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

What each ingredient does

Chocolate: Adds flavor and a dark brown color to one portion of the paste.
Biscuit paste: Forms the base that is divided, colored, and set into the finished piece.
Vegetable carmine: Provides a red color to one of the paste portions.
Saffron: Adds a yellow tint and a subtle aroma to the paste.

The step that matters

Bake in a moderate oven at 350°F (175°C) for 2 to 3 hours. A moderate, steady oven dries and sets the paste gradually so it holds its shape. Too high a heat can darken the chocolate portion unevenly or scorch the edges before the centre sets, while the long bake is needed to fully firm the paste.