Why it works: Pepper and potato are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 8,305 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Roast Beef with Yorkshire Pudding
Ingredients
Directions
The book says “a very hot oven”. The 400°F in the steps is the modern equivalent, not the book's own figure.
Prepare the roast
Wash and rub the rib roast with coarse sea salt and black pepper.
Dredge the roast with flour and place it in a baking pan with 1 pint of boiling water.
Roast and add the batter
Put the pan in a very hot oven (400°F / 200°C) and baste often.
Bake for three hours.
One hour before it's done, add peeled potatoes to the pan.
Half an hour later, pour a batter made with 2 cups of flour, 1 teaspoon of baking powder, ¼ teaspoon of salt, ½ pint of milk, and 2 eggs into one end of the pan.
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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Pepper + potatotop 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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Flour + milktop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + potatotop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and milk barely smell alike, yet cooks put them together in 78,219 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Rib roast
- Provides the main cut of meat, which cooks through slowly while its fat renders and browns.
- Eggs
- Set and bind the batter, giving the Yorkshire pudding its structure as it rises.
- Flour
- Forms the starch framework of the batter and coats the roast to help it brown.
- Baking powder
- Releases gas in the batter, helping the pudding rise in the hot oven.
- Milk
- Adds moisture and richness to the batter, contributing to a tender interior and browned crust.
The step that matters
Pouring the batter into the pan. The batter needs a very hot oven and hot pan fat to puff quickly. Adding it too early or to a cool pan can cause it to spread and rise poorly.
Swap the potato
How well each one fits the dish's main ingredients (pepper, flour, milk, egg):
- Capsicumfits better
- Asparagusfits about as well
- Spinachfits about as well
- Potatothe original
Fit is the average pairing score against pepper, flour, milk, 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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