Why it works: Ketchup and sugar match in chemistry and in kitchens. They rank in the top 8% of all ingredient pairs, and cooks put them together in 260 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Stewed Shrimps
Ingredients
Directions
Prepare
Rinse canned shrimps in cold water.
If using fresh shrimps, remove the shells carefully.
Make the stew
Heat the butter in a saucepan over medium heat until it hisses.
Add the shrimps and toss with a fork to coat them in butter.
Add the boiling water, tomato ketchup, lemon juice, sugar, and cayenne.
Stew gently for three minutes.
Serve
Serve with toasted buttered crackers.
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.
-
Ketchup + sugartop 8% of all pairsSmell alikestrongCooked together260 recipes
Shared aroma: ethanol (alcoholic, ethereal).
-
Tomato + lemontop 11% of all pairsSmell alikemoderateCooked together4,592 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Shrimp + buttertop 11% of all pairsSmell alikemoderateCooked together2,931 recipes
Shared aroma: 2,6-nonadienal (cucumber, green).
-
Shrimp + tomatotop 15% of all pairsSmell alikemoderateCooked together1,689 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Shrimps
- Provide the main protein, which turns firm and opaque as it stews briefly in the sauce.
- Butter
- Adds richness and carries flavor when heated, coating the shrimps before the liquid goes in.
- Tomato ketchup
- Adds sweetness, acidity and a tomato flavor that forms the body of the sauce.
- Lemon juice
- Adds acidity that brightens the sauce and balances the sweetness.
- Sugar
- Balances the acidity of the ketchup and lemon juice, rounding out the sauce.
The step that matters
Stew gently for three minutes. Shrimp proteins tighten quickly with heat, so a gentle simmer for a short time keeps them tender. Boiling hard or stewing too long makes them tough and rubbery.
Swap the tomato
How well each one fits the dish's main ingredients (shrimp, butter, ketchup, lemon, sugar):
- Capsicumfits better
- Shallotfits better
- Chivefits better
- Tomatothe original
Fit is the average pairing score against shrimp, butter, ketchup, lemon, sugar. 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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