Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Plain Oyster Soup
Ingredients
Directions
Prepare
Strain the oysters.
If the liquor is not perfectly fresh, discard it and use one pint of water instead.
Make the soup
Add a small onion, three blades of mace, some finely chopped celery, pepper, and salt.
Bring the mixture to a boil, then add the oysters.
When the mixture has just come to a boil, add enough cream and milk to fill the tureen.
Thicken
Thicken the soup with flour and butter rubbed together, about two spoonfuls of flour and three ounces of butter to a tureen full, and three pints large oysters.
Nutrition, whole recipe (rough)
Counts 5 of 7 ingredients. The other 2 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 5 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Butter | 1 tbsp (14g) | 102 |
| Oyster | 6 medium (84g) | 81 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
| Water | not in our table | 0 |
| Mace | 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.
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.
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + oystertop 12% of all pairsSmell alikemoderateCooked together8,184 recipes
Shared aroma: 2,6-nonadienal (cucumber, green).
-
Mace + peppertop 16% of all pairsSmell alikelowCooked together12,257 recipes
Shared aroma: myristicin (spice, warm).
-
Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + peppertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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
What each ingredient does
- Oysters
- Provide the main body and briny flavor of the soup.
- Flour
- Thickens the soup as its starch swells when heated in liquid.
- Butter
- Adds richness and fat, and helps the flour blend smoothly.
- Cream and milk (in the method)
- Add richness and a creamy, smooth texture to the broth.
The step that matters
Rubbing the flour and butter together. Flour needs to be evenly coated in fat and then heated in the liquid so its starch swells and thickens the soup without lumps. Adding it raw or in clumps leaves pockets of unthickened flour.
Swap the mace
How well each one fits the dish's main ingredients (butter, oyster, flour, pepper):
- Parsleyfits better
- Capersfits better
- Nutmegfits better
- Macethe original
Fit is the average pairing score against butter, oyster, flour, pepper. 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.
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