Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Scotch Haggis
Ingredients
Directions
Prepare the stomach
Wash the sheep's stomach and soak it in cold salt water for several hours.
Turn the stomach inside out, scald it in boiling water, scrape it, and let it sit in water until needed.
Prepare the pluck
Clean the sheep's pluck thoroughly and pierce the heart and liver to let the blood run out.
Boil the liver and lights for 30 minutes, then transfer to fresh water and boil the rest of the pluck with them for another 30 minutes.
Trim away skins and discolored parts, grate half the liver, and mince the rest finely.
Fill and cook
In a bowl, combine the minced pluck, grated liver, suet, onions, oatmeal (or oat‑cakes), salt, pepper, nutmeg, and cayenne.
Moisten the mixture with gravy and lemon juice, then fill the prepared stomach, leaving room for swelling.
Sew the stomach securely and plunge it into boiling water.
Boil gently for 3 hours, pricking it with a needle occasionally to let air escape.
Serve hot without sauce or gravy.
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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Nutmeg + lemontop 5% of all pairsSmell alikestrongCooked together11,318 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Pepper + nutmegtop 7% of all pairsSmell alikestrongCooked together13,015 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Liver + oniontop 15% of all pairsSmell alikelowCooked together1,420 recipes
Shared aroma: furaneol (caramel, strawberry).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Oatmeal
- Absorbs moisture and gives the filling its crumbly, binding body.
- Suet
- Adds fat that keeps the filling moist and rich during long boiling.
- Sheep's pluck
- Provides the main meaty flavour and the bulk of the filling.
- Onions
- Add savoury sweetness and aroma to the filling.
- Gravy
- Moistens the filling so it holds together and cooks through.
- Lemon juice
- Adds acidity that brightens the rich, fatty filling.
The step that matters
Leave room in the stomach and prick it while boiling. The filling swells as it cooks and gives off steam. Overfilling can burst the stomach, and pricking lets trapped air escape so the casing stays intact.
Swap the onion
How well each one fits the dish's main ingredients (liver, pepper, nutmeg, lemon):
- Spinachfits better
- Carrotfits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against liver, pepper, nutmeg, lemon. 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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