Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Hamburg Croquettes
Ingredients
Directions
Prepare the croquettes
Mix together the ground steak, cold mashed potatoes, milk, salt, pepper, and chopped onion if desired.
Form the mixture into cylinder-shaped croquettes, flattening the ends.
Beat the egg with water in a bowl.
Dip each croquette into the egg mixture, then roll in cracker crumbs.
Roast and serve
Place the croquettes side by side in a roasting pan.
Melt the butter in the boiling water and pour it over the croquettes.
Cover the pan and roast until browned.
Serve each hot croquette on a lettuce leaf with a bit of mayonnaise.
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.
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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ground steak
- Forms the main body of the croquettes and provides the meaty flavor.
- Cold mashed potatoes
- Binds the mixture and adds moisture and softness to the croquettes.
- Egg
- Coats the croquettes so the cracker crumbs adhere and help form a crust.
- Milk
- Adds moisture to the mixture, keeping it tender as it cooks.
- Cracker crumbs
- Form a crisp, browned outer coating on the croquettes.
The step that matters
Roast until browned. The pan is covered, so browning depends on the buttered boiling water and the croquette coating. Check colour near the end, since covered cooking can leave the surface pale and the meat must be cooked through.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (potato, milk, pepper, egg, butter):
- Capsicumfits better
- Asparagusfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against potato, milk, pepper, egg, butter. 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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