Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Potato Split Biscuit
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
Bake potatoes until soft.
While hot, strain them into a stone jar.
Stir in the lard and butter mixture, salt, and beaten eggs.
Dissolve the yeast and sugar in the milk, then add to the potato mixture.
Stir in 4 cups sifted flour.
Mix at 8 a.m. and cover.
Let rise in a warm place until 11 a.m., then add 1 pint sifted flour.
Shape and bake
At 4 p.m., turn the dough onto a floured surface, roll it out, and cut with a biscuit cutter.
Place the biscuits in a baking pan, stacking them with a little butter in between.
Cover with a towel and let rise for 2 hours.
Bake in a preheated oven at 400°F (200°C) for dinner.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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
- Potatoes
- Add moisture and softness to the dough, helping the biscuits stay tender.
- Eggs
- Add richness and structure, helping bind the dough and set during baking.
- Yeast
- Produces gas during the long rise, leavening the dough so the biscuits become light.
- Lard and butter
- Add fat that tenderises the dough and gives the biscuits a rich flavour.
- All-purpose flour
- Provides the main structure as gluten develops, holding the risen dough together.
The step that matters
Let the dough rise in a warm place. Yeast needs warmth and time to produce gas; a cold or rushed rise leaves the dough dense, while the long timed rises build the light texture this biscuit depends on.
Swap the potato
How well each one fits the dish's main ingredients (butter, egg, milk, sugar, flour):
- Sweet potatofits about as well
- Leekfits about as well
- Arrowrootfits about as well
- Potatothe original
Fit is the average pairing score against butter, egg, milk, sugar, flour. 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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