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 ↓
Hashed Brown Potatoes with Gravy
Ingredients
Directions
Make the gravy
Melt 1 tablespoon of butter in a saucepan.
Add flour and brown carefully.
Add 1 cup of boiling water, reserving 3 tablespoons.
Stir in salt, pepper, half of the sliced onion, and half of the bay leaf.
Melt another tablespoon of butter with the reserved boiling water.
Moisten the potatoes with this mixture.
Brown the potatoes
Rub a frying pan with the remaining half of the onion.
Add 1 tablespoon of butter and heat until very hot.
Pour in the prepared potatoes and brown them.
Turn the potatoes out like an omelette onto a hot platter.
Finish and serve
Strain the gravy, add tomato ketchup, and serve it in a sauceboat with the potatoes or pour it around them on the platter.
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).
-
Potato + tomatotop 5% of all pairsSmell alikestrongCooked together2,798 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cold boiled potatoes
- Form the main body of the dish and brown into a crisp crust on the outside.
- Butter
- Adds richness and helps the potatoes brown in the hot pan.
- Flour
- Browned in butter to thicken the gravy as it cooks with the water.
- Onion
- Flavours the gravy and lightly seasons the pan before the potatoes go in.
- Tomato ketchup
- Adds sweetness and acidity to the finished gravy.
The step that matters
Brown the potatoes in a very hot pan. The pan must be very hot before the potatoes go in, so the surface browns and crisps instead of steaming. Crowding or a cool pan leaves the potatoes soft and pale.
Swap the tomato
How well each one fits the dish's main ingredients (potato, onion, flour, butter, pepper, ketchup):
- Chivefits better
- Leekfits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against potato, onion, flour, butter, pepper, ketchup. 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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