Name: Calf's Sweetbreads with Mushrooms
Ingredients: 2 sweetbreads; ½ teaspoon coarse sea salt; ½ pint milk; ¼ teaspoon cayenne pepper; 6 large fresh mushrooms; 1 tablespoon flour; 2 teaspoons butter; 1 tablespoon chopped parsley

Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Calf's Sweetbreads with Mushrooms

Ingredients

Directions

Prepare the sweetbreads

Soak the sweetbreads in warm water with salt for 1 hour.
Remove the skin and cut away any fat or gristle.
Boil the sweetbreads in enough water to cover for 30 minutes, then strain.

Make the sauce

In a saucepan, combine the sweetbreads, milk, salt, cayenne, and mushrooms.
Boil slowly for another 30 minutes.
Thicken the sauce with flour.
Stir in butter and parsley.

Serve

Serve the sweetbreads whole with the sauce.

Recipe from a historical cookbook (Internet Archive).

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.

Pepper + parsleytop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Milk + buttertop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Mushroom + buttertop 7% of all pairs

Smell alikemoderate

Cooked together12,525 recipes

Shared aroma: trans-2-decenal (waxy, orange).
Pepper + mushroomtop 11% of all pairs

Smell alikemoderate

Cooked together13,580 recipes

Shared aroma: 2-nonenal (fatty, green).
Mushroom + parsleytop 11% of all pairs

Smell alikemoderate

Cooked together6,132 recipes

Shared aroma: 2,4-decadienal (seaweed).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sweetbreads: Provide the main tender meat that is cooked and served whole.
Milk: Forms the liquid base of the sauce and adds creamy richness as it simmers.
Mushrooms: Add earthy flavour and moisture to the sauce as they cook.
Flour: Thickens the sauce so it clings to the sweetbreads.
Butter: Adds fat and a smooth, rounded finish to the sauce.

The step that matters

Thicken the sauce with flour. Flour must be stirred in evenly and cooked through, or it leaves lumps or a raw starchy taste. Starch thickens the sauce as it heats and gelatinises.

Swap the parsley

How well each one fits the dish's main ingredients (milk, pepper, mushroom, flour, butter):

Thymefits about as well
Nutmegfits about as well
Parsleythe original
Cinnamonfits about as well

Fit is the average pairing score against milk, pepper, mushroom, flour, butter. 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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Calf's Sweetbreads with Mushrooms