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 ↓
Nasturtium Sauce
Ingredients
Directions
Prepare
Cut the butter into small bits and place in a saucepan.
Mix the water with a little flour to make a stiff batter.
Pour the batter over the butter in the saucepan.
Make the sauce
Hold the saucepan over high heat, shaking it until the butter melts.
Let it come to a boil, then remove from heat.
Thicken the sauce with the pickled nasturtium seeds.
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.
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + vinegartop 23% of all pairsSmell alikemoderateCooked together13,513 recipes
Shared aroma: isoamyl acetate (banana, pear).
-
Flour + vinegartop 27% of all pairsSmell alikemoderateCooked together8,652 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
What each ingredient does
- Butter
- Provides fat for richness and a smooth, silky body to the sauce.
- Flour
- Its starch thickens the water and melts into the butter to give body.
- Pickled nasturtium seeds
- Add a sharp, tangy acidity and a crisp bite from the vinegar.
The step that matters
Let it come to a boil. Flour starch only thickens fully once it reaches boiling, and it needs to be stirred or shaken to stay smooth. Stopping too early leaves the sauce thin and may leave a raw floury taste.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Tomato Soup526 recipes
Brown Bread461 recipes
Mutton Broth292 recipes
Yorkshire Pudding264 recipes