Why it works: Onion and walnut are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 1,771 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓
Mutton and Kidney Pudding
Ingredients
Directions
Cut slices from an underdone leg of mutton and kidneys to form alternate layers, then mix in some minced onions.
Prepare the pudding in a shape or as a paste, but do not over-season.
Pour good gravy into the pudding when boiled, using walnut ketchup for flavor.
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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Onion + walnuttop 15% of all pairsSmell alikemoderateCooked together1,771 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Mutton + oniontop 18% of all pairsSmell alikelowCooked together4,531 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + ketchuptop 19% of all pairsSmell alikelowCooked together1,997 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Walnut + ketchuptop 22% of all pairsSmell alikelowCooked together596 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Mutton + ketchuptop 24% of all pairsSmell alikelowCooked together367 recipes
Shared aroma: decanoic acid (soapy, waxy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Leg of mutton
- Provides the main meat bulk and savoury flavour that carries the whole pudding.
- Kidneys
- Adds a rich, deeply savoury flavour and a firm, meaty texture between the mutton layers.
- Minced onions
- Contribute aroma and a mild sweetness as they soften during cooking.
- Good gravy
- Adds moisture and body, so the meat stays juicy and the pudding is not dry.
- Walnut ketchup
- Adds concentrated savoury depth and a tangy, umami-rich note to the dish.
The step that matters
Do not over-season the pudding. Walnut ketchup and gravy already contribute salt and savoury depth, and flavours concentrate as the pudding cooks and absorbs liquid. Adding too much seasoning early can leave the finished pudding overly salty, so taste before finishing.
Swap the walnut
How well each one fits the dish's main ingredients (mutton, onion, ketchup):
- Beansfits better
- Peasfits better
- Walnutthe original
- Sesamefits about as well
Fit is the average pairing score against mutton, onion, ketchup. 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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