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Boston Baked Beans

A slow‑cooked bean dish with salt pork, molasses, mustard, and baking soda.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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

Ingredients

Directions

The book gives no oven temperature. The 300°F (150°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the beans

  1. Soak the beans overnight in enough water to cover them.

  2. In the morning, parboil the beans until tender, changing the water twice and adding a pinch of baking soda.

Assemble and bake

  1. Place half the beans in a crock, then add the salt pork, and top with the remaining beans.

  2. Add the molasses, salt, and mustard.

  3. Cover with hot water and bake at 300°F (150°C) for eight hours, keeping the beans covered with water until the last hour.

  4. Remove the cover and let the beans brown for the final hour.

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

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

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

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

  4. Molasses + mustardtop 23% of all pairs
    Smell alikelow
    Cooked together468 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. Beans + molassestop 26% of all pairs
    Smell alikelow
    Cooked together491 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Dried beans
Provide the starchy base that softens during soaking and slow baking into a creamy texture.
Salt pork
Adds fat and savory flavor that seeps into the beans during the long bake.
Molasses
Adds sweetness and deep color, and helps the beans brown at the surface.
Mustard
Adds a sharp, savory note that balances the sweetness of the molasses.

The step that matters

Keeping the beans covered with water until the last hour. Beans exposed to air during a long bake can dry out and toughen at the surface. Keeping them submerged lets them cook evenly and turn tender, and the cover is removed only at the end so the top can brown.

“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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