Name: Boston Brown Bread
Ingredients: ½ cup white cornmeal (scalded); 1 cup sour milk; 1 cup New Orleans molasses; 1 quart brown flour; 1 teaspoon salt; 1 teaspoon baking soda (scalded)

Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Boston Brown Bread

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 batter

Preheat the oven to 300°F (150°C).
In a large bowl, combine the scalded cornmeal, sour milk, molasses, brown flour, salt, and baking soda, then mix until well combined.

Bake

Pour the batter into large tins.
Bake for 2 hours.

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.

Milk + flourtop 14% of all pairs

Smell alikelow

Cooked together78,219 recipes

Shared aroma: isobutyraldehyde (malty, green).
Molasses + flourtop 16% of all pairs

Smell alikemoderate

Cooked together10,429 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Milk + molassestop 21% of all pairs

Smell alikelow

Cooked together7,243 recipes

Shared aroma: furaneol (caramel, strawberry).

Milk and flour barely smell alike, yet cooks put them together in 78,219 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

New orleans molasses: Adds sweetness, moisture, dark color and a deep, rich flavor.
Sour milk: Its acidity reacts with the baking soda to help the bread rise.
Baking soda: Reacts with the acidic sour milk to produce gas that lightens the batter.
Brown flour: Provides the main structure and a hearty, nutty texture.
White cornmeal: Adds moisture and a slightly coarse, tender crumb.

“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.