Why it works: Catfish and onion work together. They rank in the top 6% of all ingredient pairs, and 175 recipes mention both. Both carry 2-methylbutyraldehyde, which smells malty, chocolate. The science ↓
The recipe
Ingredients
Contains: fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Make the relish
Heat 1 teaspoon olive oil in a large nonstick skillet over medium‑high heat.
Add onion; sauté 5 minutes.
Spoon onion into a bowl.
Add tomatoes, olives, water, and 1 teaspoon thyme leaves to the bowl.
Cover and refrigerate at least 2 hours.
Season and grill
Prepare grill.
Combine 1 teaspoon olive oil, remaining 2 teaspoons thyme, paprika, garlic salt, and red pepper.
Rub mixture over both sides of catfish fillets.
Place fillets on a grill rack coated with cooking spray.
Grill 5 minutes on each side, or until fish flakes easily when tested with a fork.
Serve with relish.
This recipe comes from the Recipes Wiki on Fandom and is licensed CC BY-SA 4.0. Our formatting and summaries are shared under the same licence.
Steps grouped into stages for easier reading; the method is the source's own.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.
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Catfish + oniontop 6% of all pairsAroma overlaplowMentioned together175 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Olive + tomatotop 1% of all pairsAroma overlapstrongMentioned together14,164 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Onion + garlictop 1% of all pairsAroma overlapstrongMentioned together29,030 recipes
Shared aroma: furaneol (caramel, strawberry).
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Tomato + garlictop 2% of all pairsAroma overlapmoderateMentioned together14,075 recipes
Shared aroma: furaneol (caramel, strawberry).
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Olive + garlictop 3% of all pairsAroma overlapmoderateMentioned together23,449 recipes
Shared aroma: linalool (floral, citrus).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Catfish fillets
- Provide the main protein, which turns opaque and flakes when cooked through.
- Sweet onion
- Sautéing softens its sharpness and adds natural sweetness to the relish.
- Roma tomatoes
- Add moisture and fresh acidity to the relish.
- Calamata olives
- Add salty, briny richness that balances the sweet onion and tomatoes.
- Paprika
- Adds color and mild smoky-sweet aroma to the spice rub.
The step that matters
Grill 5 minutes on each side. Fish is done as soon as it flakes easily; overcooking dries the delicate flesh, so check with a fork rather than relying only on the timer.
Flavor stand-ins for the thyme
How well each one fits the dish's main ingredients (catfish, olive, onion, tomato, garlic, pepper):
- Basilabout as good a flavor fit
- Cuminabout as good a flavor fit
- Oreganoabout as good a flavor fit
- Thymethe original
Fit is the average pairing score against catfish, olive, onion, tomato, garlic, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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