Why it works: Beans and mustard match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 852 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Boston Baked Pork and Beans
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the beans
Soak the pea beans in cold water overnight.
Drain the beans, add fresh cold water, and parboil until the skins break.
Drain again and rinse with cold water.
Place the beans in a pot.
Bake
Clean the salt pork, make gashes on top, and press it into the beans.
Mix the salt, mustard, molasses, and hot water, then pour over the beans.
Ensure there is enough water to cover the beans.
Add a small onion to the beans if desired.
Bake in a slow oven at 300°F (150°C) for eight hours.
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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Beans + mustardtop 4% of all pairsSmell alikestrongCooked together852 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + oniontop 7% of all pairsSmell alikestrongCooked together5,242 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pork + oniontop 10% of all pairsSmell alikemoderateCooked together18,214 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + porktop 11% of all pairsSmell alikemoderateCooked together2,000 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pea beans
- Form the bulk of the dish and turn tender during the long slow bake.
- Salt pork
- Adds fat and savory richness that flavors the beans as it renders.
- Molasses
- Adds sweetness and deep color to the sauce as it bakes.
- Mustard
- Adds a sharp, pungent note that balances the sweetness of the molasses.
The step that matters
Parboil until the skins break. Parboiling softens the bean skins so they split rather than stay tough, and the beans cook evenly during the long bake. Skipping or under-cooking this step leaves beans that stay firm and uneven.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (beans, pork, mustard, molasses):
- Lettucefits better
- Welsh onionfits better
- Broccolifits better
- Onionthe original
Fit is the average pairing score against beans, pork, mustard, molasses. 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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