Why it works: Arrowroot and flour match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 525 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
French Cream Cake
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the cream
Boil the sweet milk in a saucepan.
In a bowl, wet the cornstarch or arrowroot with a little milk, then add the eggs and beat together.
Stir the egg mixture into the boiling milk and let it boil.
Add the sugar and butter, then remove from heat and add flavoring extract to taste.
Bake and fill
In another bowl, beat the eggs and mix with powdered sugar, flour, baking soda, cream of tartar, and water.
Divide the batter into two deep pie plates and bake at 400°F (200°C).
Once baked, split the cakes while warm and fill with the cream mixture.
Store in a cool place for one to two days before serving.
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.
-
Arrowroot + flourtop 2% of all pairsSmell alikestrongCooked together525 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Cornstarch or arrowroot
- Thickens the milk mixture into a smooth, sliceable cream.
- Eggs
- Add structure and richness to both the cream and the cake batter.
- Butter
- Adds fat for richness and a smoother mouthfeel in the cream.
- Baking soda
- Reacts with the cream of tartar to release gas, helping the cake rise.
- Cream of tartar
- Acidifies the batter so it reacts with baking soda to lift the cake.
The step that matters
Cooking the cream until it boils. Starch thickens only when heated to a boil, so the cornstarch or arrowroot mixture must be stirred into the boiling milk and kept boiling. If it stays under a boil, the cream stays thin and may not set when filled and chilled.
Swap the arrowroot
How well each one fits the dish's main ingredients (milk, egg, sugar, butter, flour, cream):
- Leekfits about as well
- Potatofits about as well
- Sweet potatofits about as well
- Arrowrootthe original
Fit is the average pairing score against milk, egg, sugar, butter, flour, cream. 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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Arrowroot Pudding46 recipes
White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes