Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Sauce for Hashes of Mutton or Beef
Ingredients
Directions
Prepare the seasoning
In a bowl, mix mustard, pepper, salt, salad oil, and vinegar until smooth.
Pass the mixture through a sieve.
Make the gravy
In a stew‑pan, combine chopped bones and fragments of meat with boiling water, black pepper, allspice, parsley, celery, and herbs.
Cover and simmer for 30 minutes.
Finish the sauce
In another pan, fry the onion in butter over medium heat until slightly colored.
Stir in enough flour to form a stiff paste.
Gradually mix in the gravy from the bones.
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.
-
Parsley + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Parsley + celerytop 1% of all pairsSmell alikestrongCooked together6,810 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Mustard + celerytop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Mustard + allspicetop 2% of all pairsSmell alikestrongCooked together1,928 recipes
Shared aroma: methyleugenol (clove, spice).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Mustard
- Helps bind the oil and vinegar into a smooth mixture and adds sharp flavour.
- Salad oil
- Adds richness and a smooth, silky body to the sauce.
- Vinegar
- Adds acidity that sharpens and balances the fat.
- Butter
- Adds richness and a rounded flavour when cooked with the onion.
- Flour
- Thickens the liquid into a smooth sauce as it cooks with the gravy.
- Onion
- Adds savoury sweetness and aroma once lightly coloured in butter.
The step that matters
Gradually mix in the gravy from the bones. Flour forms a stiff paste that clumps when liquid is poured in all at once. Adding the gravy slowly and stirring lets the starch disperse evenly, giving a smooth, thickened sauce.
Swap the onion
How well each one fits the dish's main ingredients (mustard, pepper, vinegar, allspice, parsley, celery, lemon):
- Horseradishfits better
- Shallotfits better
- Broccolifits better
- Onionthe original
Fit is the average pairing score against mustard, pepper, vinegar, allspice, parsley, celery, 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.
More hash sauce recipes
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.
Lemon Sauce236 recipes
Cream of Celery Soup113 recipes
Celery Stew25 recipes
Celery Croquettes16 recipes