Why it works: Potato and butter match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and 6,445 recipes mention both. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
The recipe
Ingredients
Contains: egg, milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Make the potato mixture
Combine the mashed potatoes, butter, egg yolks, and salt in a saucepan.
Stir over low heat until well mixed.
Remove from heat and let cool.
Dust a board with flour.
Roll the potato mixture into a shape of your choice.
Coat and fry
Beat the egg white with a little water.
Dip the shaped potato in the egg white mixture.
Roll the potato in bread or cracker crumbs.
Heat lard in a frying pan.
Fry the coated potatoes until golden brown.
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 aroma chemistry they share, and how many recipes mention both.
-
Potato + buttertop 6% of all pairsAroma overlapstrongMentioned together6,445 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + breadtop 3% of all pairsAroma overlapstrongMentioned together27,145 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Egg + breadtop 6% of all pairsAroma overlapstrongMentioned together22,584 recipes
Shared aroma: (e)-2-octenal (fatty, green).
-
Butter + flourtop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + eggtop 8% of all pairsAroma overlapstrongMentioned together118,511 recipes
Shared aroma: nonanal (fat, citrus).
Butter and flour share little aroma chemistry, yet 122,858 recipes mention both: they likely 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
- Potatoes
- Provide the bulk and soft, fluffy body of the shaped mixture.
- Egg yolks
- Add richness and help bind the mashed potato into a firm, shapeable mixture.
- Butter
- Adds fat for flavour and a smoother, richer texture.
- Egg white
- Acts as a binder so the crumbs stick to the shaped potato.
- Bread or cracker crumbs
- Form a crisp coating that browns during frying.
The step that matters
Fry the coated potatoes until golden brown. Frying at the right heat browns the crumb coating quickly while the potato inside heats through. Browning comes from the Maillard reaction, so a pan that is too cool leads to greasy, pale coatings, and one that is too hot can scorch the outside before the centre is hot.
“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
Illustration
Illustration
Illustration
IllustrationThe Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
Prefer an account? Create a free account for sign-in; Pro adds the full results and chemistry.