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Boston Baked Beans

A slow‑cooked dish of navy beans with salt pork, mustard, molasses, and seasonings.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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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 Beans

Oven, in the book's wordsA slow oven

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

  1. Soak the navy beans overnight.

  2. In the morning, drain the beans and cook them in hot water until the skins wrinkle. Add ½ teaspoon baking soda and drain again when it foams.

Assemble and bake

  1. Score the rind of the salt pork and place it in a bean pot. Add the beans to the pot.

  2. Mix the dry mustard, salt, pepper, and molasses with boiling water to dissolve the mustard. Pour this mixture over the beans and add enough boiling water to cover them.

  3. Bake in a slow oven at 300°F (150°C) for 7 to 8 hours, adding boiling water as needed. After 6 to 7 hours, remove the cover and continue cooking uncovered until the water has evaporated.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Beans + mustardtop 4% of all pairs
    Smell alikestrong
    Cooked together852 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  2. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Beans + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together4,733 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  4. Beans + porktop 11% of all pairs
    Smell alikemoderate
    Cooked together2,000 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Pork + mustardtop 11% of all pairs
    Smell alikemoderate
    Cooked together2,445 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

Navy beans
Form the main body of the dish, softening into a tender, creamy interior during long baking.
Salt pork
Adds fat and savory flavor that seasons the beans as it renders during baking.
Molasses
Adds sweetness and deep color while contributing to the glossy, thickened sauce.
Dry mustard
Adds sharp, pungent flavor that balances the sweetness of the molasses.

The step that matters

Adding boiling water as needed during the long bake. Beans cooked for hours can dry out or scorch if the liquid drops too low. Keeping them submerged keeps the beans tender and moist while the sauce thickens.

“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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