Why it works: Potato and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,340 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Hash Cakes
Ingredients
Directions
Prepare the mixture
Mix the chopped beef with the mashed potato.
Season with salt, pepper, and mustard.
Knead lightly until well combined.
Work in the beaten egg to bind the mixture.
Set aside to cool and stiffen.
Coat and chill
When ready to cook, roll the mixture in beaten egg and cracker dust.
Chill for an hour.
Fry and serve
Fry in boiling oil or dripping until golden brown.
Serve dry.
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 + mustardtop 7% of all pairsSmell alikemoderateCooked together1,340 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + potatotop 8% of all pairsSmell alikemoderateCooked together2,052 recipes
Shared aroma: sotolon (curry, maple).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 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
- Roast beef
- Provides the main savoury filling that the cakes are built around.
- Mashed potato
- Adds bulk and moisture, helping the mixture hold together as cakes.
- Egg
- Binds the mixture so it holds its shape when shaped and fried.
- Cracker dust
- Forms a crisp, browned outer coating during frying.
The step that matters
Chill for an hour before frying. Chilling firms the coated cakes so the egg and cracker coating set and are less likely to break apart or absorb excess oil in the hot fat.
Swap the mustard
How well each one fits the dish's main ingredients (beef, potato, pepper, egg):
- Capsicumfits better
- Chivefits better
- Asparagusfits better
- Mustardthe original
Fit is the average pairing score against beef, potato, pepper, egg. 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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