Why it works: Peas and potato are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 1,016 recipes. Both carry 2-isobutyl-3-methoxypyrazine, which smells green bell pepper, earthy. The science ↓
Split Pea Soup
Ingredients
Directions
Make the soup
Soak the split peas overnight in water.
Drain and rinse the peas, then cook them in fresh water until soft.
Mash the cooked peas and mix with the mashed potatoes.
Serve
Serve with bread and pickles on the side.
Brew and serve coffee.
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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Peas + potatotop 9% of all pairsSmell alikemoderateCooked together1,016 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Peas + breadtop 11% of all pairsSmell alikemoderateCooked together804 recipes
Shared aroma: hexyl acetate (fruity, apple).
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Potato + coffeetop 12% of all pairsSmell alikemoderateCooked together167 recipes
Shared aroma: sotolon (curry, maple).
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Bread + potatotop 15% of all pairsSmell alikemoderateCooked together434 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Bread + coffeetop 21% of all pairsSmell alikemoderateCooked together267 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Split peas
- Form the main body of the soup and thicken it as they break down during cooking.
- Mashed potatoes
- Add starch that thickens the mash and gives the soup a smoother, creamier texture.
The step that matters
Cook the peas until fully soft. Split peas must be cooked until they are completely tender before mashing. Undercooked peas stay grainy and will not blend into a smooth, thick soup.
Swap the peas
How well each one fits the dish's main ingredients (bread, potato, coffee):
- Cocoafits better
- Peanutfits better
- Beansfits better
- Peasthe original
Fit is the average pairing score against bread, potato, coffee. 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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