Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Potato Croquettes
Ingredients
Directions
Make the potato mixture
Pass the cooked potatoes through a wire sieve.
Melt the butter in a pan, then add the potatoes, egg yolk, parsley, Parmesan, cayenne, and salt.
Cook over low heat until the mixture can be rolled into smooth balls.
Shape and coat
Allow to cool slightly, then form into balls, rolls, or fancy shapes.
Coat each shape with beaten egg and breadcrumbs.
Fry and serve
Fry in hot oil until golden brown.
Drain on paper towels and garnish with parsley.
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.
-
Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + parsleytop 5% of all pairsSmell alikemoderateCooked together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Butter + parmesan cheesetop 9% of all pairsSmell alikemoderateCooked together4,163 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Form the bulk of the croquettes and give a soft, fluffy interior when sieved.
- Butter
- Adds richness and fat, giving the mixture a smoother, more tender texture.
- Egg yolk
- Binds the mixture so it holds its shape when rolled and fried.
- Parmesan cheese
- Adds savoury, salty flavour and some firmness to the mixture.
The step that matters
Cook the mixture until it can be rolled. Cooking drives off excess moisture from the potatoes. If the mixture stays wet, the shapes will be soft and may break or burst in hot oil.
Swap the potato
How well each one fits the dish's main ingredients (butter, egg, parsley, parmesan cheese, pepper):
- Spinachfits about as well
- Asparagusfits about as well
- Chivefits about as well
- Potatothe original
Fit is the average pairing score against butter, egg, parsley, parmesan cheese, pepper. 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.
More potato croquettes recipes
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.

Macaroni and Cheese102 recipes
Potato Rolls78 recipes
Potato Chips53 recipes
Cheese Making50 recipes