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 ↓
Corned Beef Hash
Ingredients
Directions
Prepare the mixture
Mix equal parts chopped corned beef and cold boiled potatoes in a bowl.
Season with salt, pepper, and onion juice if desired.
Cook
In a frying pan, melt butter and add enough milk, stock, or hot water to moisten the hash.
Add the meat and potato mixture to the pan, mixing gently to avoid mashing the potatoes.
Cover and cook slowly for 30 minutes, or until a crust forms on the bottom.
Carefully turn the hash onto a hot dish, similar to an omelet.
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.
-
Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Beef + potatotop 8% of all pairsSmell alikemoderateCooked together2,052 recipes
Shared aroma: sotolon (curry, maple).
-
Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 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
- Cooked corned beef
- Provides the main meat flavor and savory, chewy bulk of the hash.
- Cold boiled potatoes
- Supplies starchy body that binds the hash and helps form a browned crust.
- Butter
- Adds fat for frying, richness, and browning on the bottom of the hash.
- Milk, stock, or hot water
- Adds moisture so the hash stays tender rather than drying out in the pan.
The step that matters
Cook slowly, covered, without mashing. Gentle mixing keeps potato pieces intact for texture, and slow covered cooking heats the hash through while the bottom browns into a crust rather than burning.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (beef, potato, pepper, butter, milk):
- Capsicumfits about as well
- Onionthe original
- Tomatofits about as well
- Carrotfits about as well
Fit is the average pairing score against beef, potato, pepper, butter, milk. 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.
Potato Croquettes255 recipes
Roast Beef211 recipes
Beef Loaf175 recipes
Corned Beef87 recipes