Name: Cake with Walnuts and Marmalade
Ingredients: 1 cup sour cream,; 1 cup lard or butter,; 1 cup confectioner's sugar,; 4 yolks,; 1/2 teaspoon baking soda,; 1 teaspoon vanilla,; flour as needed,; 2 oz/50 g ground walnuts,; 6 whipped egg whites,; 1 cup sugar,; marmelade

Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓

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.

Cream + buttertop 8% of all pairs

Smell alikemoderate

Cooked together41,516 recipes

Shared aroma: delta-dodecalactone (sweet, creamy).
Sugar + vanillatop 8% of all pairs

Smell alikelow

Cooked together35,032 recipes

Shared aroma: beta-damascenone (apple, rose).
Cream + sugartop 9% of all pairs

Smell alikemoderate

Cooked together43,450 recipes

Shared aroma: 2,3-butanedione (butter, sweet).
Vanilla + walnuttop 10% of all pairs

Smell alikestrong

Cooked together2,730 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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

Egg yolks: Add richness and help bind the dough.
Sour cream: Adds moisture and tang, keeping the dough tender.
Baking soda: Reacts with the acidic sour cream to lift and lighten the dough.
Egg whites: Whipped to trap air, giving the topping a light, airy structure.
Ground walnuts: Add texture and a nutty flavor to the topping.
Marmalade (in the method): Adds fruity sweetness and moisture between the dough and topping.

The step that matters

Baking the topping at the right heat. Starting at medium heat and then raising it lets the dough set and cook through before the whipped egg white topping browns. Too high a heat at the start can scorch the top while the base stays raw.

Swap the walnut

How well each one fits the dish's main ingredients (cream, butter, sugar, vanilla, flour, egg):

Almondfits better
Chestnutfits better
Macadamia nutfits better
Walnutthe original

Fit is the average pairing score against cream, butter, sugar, vanilla, flour, egg. Candidates are from the same food group and used in at least 100 recipes.

“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.

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Lard	1 tbsp (12.8g)	115
Butter	1 tbsp (14g)	102
Yogurt	170g plain Greek	100
Egg	1 large egg (50g)	78
Sugar	1 tbsp (12.5g) granulated	49
Walnut	1 walnut half (4g)	26
Vanilla	1 tsp extract (4ml)	12

Cake with Walnuts and Marmalade