Name: Calf's Liver
Ingredients: 1 calf's liver; ½ teaspoon salt; ¼ teaspoon pepper; 5 strips salt pork; 1 tablespoon minced onion; 3 cups brown sauce

Why it works: Liver and pork are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 1,606 recipes. Both carry 1-nonanal, which smells fatty, waxy. The science ↓

Calf's Liver

Oven, in the book's wordsA medium oven

Ingredients

Directions

The book says “a medium oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

Make 5 short slits in the rounded side of the calf's liver and insert strips of salt pork.
Lay the liver in a casserole dish.
Add minced onion, salt, and pepper.

Bake

Pour the brown sauce over the liver, ensuring it is rather thin.
Cover and cook for 2 hours in a moderate oven at 350°F (175°C).

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.

Liver + porktop 9% of all pairs

Smell alikemoderate

Cooked together1,606 recipes

Shared aroma: 1-nonanal (fatty, waxy).
Pork + oniontop 10% of all pairs

Smell alikemoderate

Cooked together18,214 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Pepper + oniontop 11% of all pairs

Smell alikemoderate

Cooked together68,474 recipes

Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Liver + oniontop 15% of all pairs

Smell alikelow

Cooked together1,420 recipes

Shared aroma: furaneol (caramel, strawberry).
Pepper + porktop 16% of all pairs

Smell alikemoderate

Cooked together22,121 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 liver: Forms the main body of the dish and becomes tender during slow, covered cooking.
Salt pork: Adds fat and savory flavor as it melts into the liver during cooking.
Brown sauce: Provides moisture and rich flavor, keeping the liver from drying out in the oven.
Minced onion: Adds aromatic sweetness and savory depth to the sauce as it cooks.

The step that matters

Cover and cook for 2 hours at 350°F (175°C). Liver is lean and turns tough and grainy when overcooked. Covering it with thin sauce and cooking gently at a moderate temperature keeps moisture in, so the liver stays tender. Check it near the end of the time.