Name: Ragout of Sweetbreads
Ingredients: 2 medium-sized sweetbreads; 8 whole mushrooms; 1 large truffle, sliced; 6 olives, cut into small pieces; Salt and pepper to taste; 1 teaspoon flour; 1 tablespoon Madeira; ½ cup thick gravy

Why it works: Mushroom and truffle are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 1,900 recipes. Both carry 2,4-nonadienal, which smells fatty, green. The science ↓

Ragout of Sweetbreads

Ingredients

Directions

Prepare

Cut the sweetbreads into 1½‑inch cubes.

Make the ragout

Add the mushrooms, truffle, and olives. Season with salt and pepper, then mix well.
Stir in the flour, Madeira, and thick gravy.

Cook

Place the mixture in a bag and cook for 40 minutes.

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.

Mushroom + truffletop 4% of all pairs

Smell alikemoderate

Cooked together1,900 recipes

Shared aroma: 2,4-nonadienal (fatty, green).
Mushroom + olivetop 7% of all pairs

Smell alikemoderate

Cooked together4,571 recipes

Shared aroma: trans,trans-2,4-nonadienal (fatty, green).
Olive + peppertop 11% of all pairs

Smell alikemoderate

Cooked together30,263 recipes

Shared aroma: 2,4-decadienal (seaweed).
Mushroom + peppertop 11% of all pairs

Smell alikemoderate

Cooked together13,580 recipes

Shared aroma: 2-nonenal (fatty, green).
Truffle + olivetop 15% of all pairs

Smell alikemoderate

Cooked together435 recipes

Shared aroma: ethyl isobutyrate (fruity, ethereal).

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

What each ingredient does

Sweetbreads: Provide the tender, meaty body that forms the main substance of the ragout.
Flour: Thickens the gravy and sauce so the ragout holds together rather than running thin.
Thick gravy: Supplies moisture and savory depth that keeps the ingredients from drying out during cooking.
Mushrooms: Add earthy savoriness and a meaty texture that complements the sweetbreads.
Madeira: Adds sweetness and aromatic depth to the sauce.

The step that matters

Place the mixture in a bag and cook for 40 minutes. Sealing the ingredients in a bag traps moisture so the sweetbreads cook gently in their own juices and gravy. Without a tight seal, the liquid can evaporate and the sweetbreads may dry out or toughen.

“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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Ragout of Sweetbreads