Name: Nut Loaf
Ingredients: 2 cups all-purpose flour; ½ cup chopped walnuts; 1 cup sugar; 2 teaspoons baking powder; 1 cup milk; ¼ teaspoon salt; 1 egg

Why it works: Flour and walnut are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 5,873 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Nut Loaf

Oven, in the book's wordsA good oven

Ingredients

Directions

The book says “a good oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

Mix all the dry ingredients in a bowl.

Make the batter

Add the beaten egg and milk, and stir until combined.
Pour the mixture into a greased cake tin.

Bake

Bake in a preheated oven at 350°F (175°C) 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.

Photo for illustrative purposes only · Contact us to use it

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 + walnuttop 12% of all pairs

Smell alikemoderate

Cooked together5,873 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + milktop 14% of all pairs

Smell alikelow

Cooked together78,219 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + sugartop 15% of all pairs

Smell alikemoderate

Cooked together92,116 recipes

Shared aroma: phenylacetaldehyde (hawthorne, honey).
Flour + eggtop 15% of all pairs

Smell alikelow

Cooked together106,462 recipes

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

Smell alikemoderate

Cooked together3,236 recipes

Shared aroma: 1-hexanal (fruit).

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

All-purpose flour: Provides the main structure that holds the loaf together as it sets.
Baking powder: Releases gas during baking so the loaf rises and becomes light.
Egg: Binds the batter and helps set the crumb as it bakes.
Milk: Hydrates the flour and adds moisture to the batter.
Sugar: Adds sweetness and helps the crust brown during baking.
Walnuts: Add texture and a nutty flavour throughout the loaf.