Name: To Roast Calf's Liver
Ingredients: 1 whole or part of a fine white calf's liver; Coarse sea salt; Black pepper; 2 tablespoons butter; Bacon (optional); Vinegar (for soaking); 1 onion, sliced; Fresh herbs (such as thyme or savory); Gravy (for serving)

Why it works: Pepper and thyme are a kitchen classic. They rank in the top 4% of all ingredient pairs, and cooks put them together in 11,585 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓

To Roast Calf's Liver

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

Preheat your oven to 350°F (175°C).
If desired, lard the liver with bacon or wrap it in buttered paper.

Roast

Roast the liver for 1 to 1¼ hours, basting it frequently.
Remove the paper and froth the liver for the last 10 to 15 minutes of cooking.

Soak and serve

For added flavor, soak the liver overnight in vinegar with sliced onion and herbs.
Serve with a piquant sauce and good gravy.

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 + thymetop 4% of all pairs

Smell alikemoderate

Cooked together11,585 recipes

Shared aroma: beta-phellandrene (minty, terpene).
Onion + thymetop 7% of all pairs

Smell alikemoderate

Cooked together11,171 recipes

Shared aroma: coumarin (sweet, hay).
Pepper + oniontop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Vinegar + oniontop 14% of all pairs

Smell alikemoderate

Cooked together18,226 recipes

Shared aroma: acetic acid (sour, vinegar).
Pepper + vinegartop 14% of all pairs

Smell alikemoderate

Cooked together27,814 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).

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

What each ingredient does

Calf's liver: Lean meat that sets firm when roasted; it dries out easily if cooked too long.
Butter: Adds richness and moisture, and helps the surface brown while it roasts.
Onion: Adds savory aroma and flavor during the vinegar soak.

The step that matters

Roast the liver for 1 to 1¼ hours, basting it frequently.. Calf's liver is lean, so overcooking tightens its proteins and makes it dry and grainy. Frequent basting keeps the surface moist while the interior cooks through.

Swap the onion

How well each one fits the dish's main ingredients (liver, pepper, butter, vinegar, thyme):

Mustardfits better
Shallotfits about as well
Capsicumfits about as well
Onionthe original

Fit is the average pairing score against liver, pepper, butter, vinegar, thyme. 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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To Roast Calf's Liver