Why it works: Butter and flour are a kitchen classic. They rank in the top 6% of all ingredient pairs, and 122,858 recipes mention both. Both carry isobutyraldehyde, which smells malty, green. The science ↓
The recipe
Ingredients
Contains: milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare and roast
Preheat oven to 400°F (200°C).
Paper the outside of the lamb and baste it with good butter.
Roast a large fore-quarter for 1.5 hours, or a small one for 1 hour.
Roast a leg for about 45 minutes; roast a neck, breast, or shoulder for 45 minutes; roast very small joints for 30 minutes.
Do not paper or raise the skin on smaller joints.
Serve
Dress them like mutton and garnish with cress or small salad.
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 aroma chemistry they share, and how many recipes mention both.
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Butter + flourtop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lamb + buttertop 9% of all pairsAroma overlapstrongMentioned together2,230 recipes
Shared aroma: gamma-nonanolactone (coconut, creamy).
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Lamb + flourtop 15% of all pairsAroma overlaplowMentioned together1,379 recipes
Shared aroma: acetaldehyde (pungent, ethereal).
Butter and flour share little aroma chemistry, yet 122,858 recipes mention both: they likely 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
- Lamb
- Forms the main meat; its fat renders and its outer layer browns during roasting.
- Good butter
- Adds fat and richness, and helps the outside brown when basted over the meat.
The step that matters
Matching papering and roasting time to the size of the joint. Smaller joints have less mass and cook faster, so they can dry out if roasted for the full time or papered as larger cuts are. Following the shorter times and skipping the paper helps keep them moist.
“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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