Why it works: Carrot and parsley match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 8,053 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Calfs Head Au Gratin
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Wash the calf's head.
Parboil the tongue and brain.
Sprinkle the tongue and brain lightly with salt and set aside.
Cover the head with cold water.
Bring the head to a boil.
Plunge the head into ice water to firm and whiten it.
Wash the head with vinegar.
Cook
Place the head in boiling water mixed with 2 tablespoons of vinegar.
Add the sliced onion, carrot, minced parsley, black peppercorns, and salt.
Cook gently for 2 hours or until the cheekbones slip out easily.
Transfer the head to a baking pan.
Remove the bones and teeth from the head.
Bake and serve
Rub the head with butter.
Cover the head thickly with peppered and salted bread crumbs.
Brown the head in a 400°F (200°C) oven.
Serve with tomato sauce.
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.
-
Carrot + parsleytop 1% of all pairsSmell alikestrongCooked together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Carrot + tomatotop 6% of all pairsSmell alikestrongCooked together3,606 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + breadtop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 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
- Calf's head
- Forms the main body of the dish, becoming tender through long gentle simmering.
- Butter
- Adds fat and richness and helps the bread crumbs brown in the oven.
- Fine bread crumbs
- Form a crisp, browned crust over the head during baking.
- Vinegar
- Acidity in the poaching water helps whiten the meat and firm its surface.
The step that matters
Cook gently for 2 hours. A gentle simmer keeps the meat tender and intact; a hard boil toughens proteins and can break the head apart. Doneness is shown when the cheekbones slip out easily.
Swap the onion
How well each one fits the dish's main ingredients (vinegar, carrot, parsley, butter, bread, tomato, sauce):
- Capsicumfits better
- Shallotfits better
- Potatofits about as well
- Onionthe original
Fit is the average pairing score against vinegar, carrot, parsley, butter, bread, tomato, sauce. 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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