Name: White Sauce for Fish
Ingredients: one tablespoonful butter; one cup milk; one tablespoonful flour; one tablespoon chopped parsley; two hard boiled eggs cut in slices; 12 meats; salt; pepper; parsley

Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

White Sauce for Fish

Ingredients

Directions

One tablespoonful butter, one cup milk or white stock, one tablespoonful flour, salt and pepper to taste. To the above add two hard boiled eggs cut in slices, and one tablespoon chopped parsley.

Nutrition, whole recipe (rough)

791Calories

28 gProtein

26 gFat

109 gCarbs

Counts 7 of 8 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 7 portions

Ingredient	Portion assumed	kcal
Flour	1 cup (125g) all-purpose	455
Milk	1 cup (244ml) whole	149
Butter	1 tbsp (14g)	102
Egg	1 large egg (50g)	78
Black Pepper	1 tsp ground (2.3g)	6
Parsley	1 tbsp chopped fresh (3.8g)	1
Salt	1 tsp (6g)	0
Meat	not in our table	0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By Friday club, Yarmouth, Mass. [from old catalog]. 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. See the original page.

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.

Parsley + peppertop 2% of all pairs

Smell alikestrong

Cooked together34,122 recipes

Shared aroma: 4'-methylacetophenone (bitter almond).
Butter + milktop 7% of all pairs

Smell alikemoderate

Cooked together81,283 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + flourtop 12% of all pairs

Smell alikelow

Cooked together124,287 recipes

Shared aroma: isobutyraldehyde (malty, green).
Flour + parsleytop 12% of all pairs

Smell alikemoderate

Cooked together16,675 recipes

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

Smell alikelow

Cooked together78,219 recipes

Shared aroma: isobutyraldehyde (malty, green).

Butter and flour barely smell alike, yet cooks put them together in 124,287 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

Swap the parsley

How well each one fits the dish's main ingredients (butter, milk, flour, egg, meat, pepper):

Nutmegfits about as well
Parsleythe original
Cinnamonfits about as well
Cardamomfits about as well

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