Name: Johnny Cake
Ingredients: 1 cup all-purpose flour; 2½ cups cornmeal; 1 cup molasses; 1 cup sweet milk; 2 teaspoons baking powder; ¼ teaspoon salt

Why it works: Flour and milk 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 ↓

Johnny Cake

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

Preheat the oven to 350°F (175°C).

Make the batter

In a bowl, mix the flour, cornmeal, molasses, sweet milk, baking powder, and salt until well combined.
Pour the batter into a sponge cake pan.

Bake

Bake for 1 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.

Flour + milktop 14% of all pairs

Smell alikelow

Cooked together78,219 recipes

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

Smell alikemoderate

Cooked together10,429 recipes

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

Smell alikelow

Cooked together7,243 recipes

Shared aroma: furaneol (caramel, strawberry).

Flour and milk 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

Cornmeal: Forms the bulk of the crumb, giving the cake its coarse, sturdy texture.
All-purpose flour: Adds gluten-based structure that helps the cake hold its shape.
Molasses: Adds sweetness, dark color, and moisture to the batter.
Baking powder: Releases gas in the batter so the cake rises and turns lighter.
Sweet milk: Hydrates the dry ingredients and helps form the batter's structure.

“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.