Why it works: Onion and parsley are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 25,843 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Lamb's Fry
Ingredients
Directions
Prepare the sweetbreads
Trim the sweetbreads.
Simmer the sweetbreads in good white stock with an onion for 15 minutes.
Remove the sweetbreads from the stock.
Prepare the brains
Add the brains to the gravy.
Boil the brains until hardened.
Let the brains cool.
Slice the brains.
Egg the brains.
Breadcrumb the brains.
Fry the breadcrumbed brains and sweetbreads in a little butter.
Cook the heart, milt and kidneys
Add the heart and milt to the gravy.
Stew the heart and milt slowly until tender.
Flour the heart and milt.
Fry the heart and milt with the liver and frill until browned.
Slice the kidneys.
Gently fry the kidneys for about 1 minute.
Make the gravy and serve
Shake a little flour into the pan.
Stir until the flour begins to brown.
Pour in the gravy.
Season the gravy.
Pour the gravy around the fry.
Arrange the fry neatly on the dish.
Garnish with fried parsley.
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.
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + parsleytop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Liver + oniontop 15% of all pairsSmell alikelowCooked together1,420 recipes
Shared aroma: furaneol (caramel, strawberry).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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
- Sweetbreads
- Tender offal that browns well and gives the fry its rich, delicate texture.
- Brains
- Set firm when boiled, so they can be sliced and coated in egg and breadcrumbs.
- Butter
- Fat for frying, adding richness and helping the coated pieces brown.
- Flour
- Coats the heart and milt and browns in the pan to thicken the gravy.
The step that matters
Stirring the flour until it begins to brown. Flour cooked in fat gains colour and nutty flavour as it browns, and it thickens the gravy. Stopping too early leaves a raw, pasty taste; going too far gives a bitter, burnt flavour.
Swap the onion
How well each one fits the dish's main ingredients (liver, butter, flour, parsley):
- Shallotfits better
- Chivefits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against liver, butter, flour, parsley. 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.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes