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 ↓
Liver Rolls
Ingredients
Directions
Prepare the liver
Pour boiling water over the liver slices and let them stand for 5 minutes.
Remove the skin from the liver slices and season with salt and pepper.
Place a small piece of fat salt pork on each slice and roll them up, securing with string.
Cook and serve
Brown the rolls in drippings or butter in a skillet.
Add flour to the skillet and stir to combine.
Cover the rolls with water and season more if necessary.
Cook for 1 hour, then remove the strings and serve.
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.
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Liver + porktop 9% of all pairsSmell alikemoderateCooked together1,606 recipes
Shared aroma: 1-nonanal (fatty, waxy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pork + buttertop 13% of all pairsSmell alikemoderateCooked together13,933 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
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Pepper + porktop 16% of all pairsSmell alikemoderateCooked together22,121 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Liver
- Forms the main body of the rolls and gives them their rich, savory flavor.
- Fat salt pork
- Adds fat that keeps the lean liver moist as it cooks.
- Drippings or butter
- Browns the rolls in the skillet, building color and savory flavor.
- Flour
- Stirred into the skillet to help thicken the cooking liquid.
The step that matters
Brown the rolls before adding water. Browning in fat develops color and flavor through the Maillard reaction, which water-added stewing alone cannot produce. Searing first also helps the rolls hold their shape.
“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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