Name: Tench, Baked
Ingredients: 1 tench; 3 oz (6 tablespoons) butter or fat; 2 shallots, finely chopped; 2 lemons; 1 pint white sauce; 1 tablespoon coarsely chopped gherkin; salt; pepper

Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Tench, Baked

Ingredients

Directions

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the fish

Scale and clean the tench thoroughly, removing the gills.
Sprinkle the fish liberally with lemon juice and let it sit for 1 hour.

Bake

Melt the butter in a baking dish, add the fish, and baste it well.
Sprinkle with salt and pepper, then add the shallots.
Cover the fish with greased paper and bake at 350°F (175°C) for 25 to 35 minutes, depending on size.

Make the sauce and serve

Prepare the white sauce, then stir in the gherkin and a tablespoon of lemon juice, seasoning to taste.
Serve the fish with the sauce poured over.

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.

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.

Lemon + peppertop 3% of all pairs

Smell alikestrong

Cooked together27,047 recipes

Shared aroma: trans-2-nonenal (cardboard, fatty).
Shallot + lemontop 6% of all pairs

Smell alikestrong

Cooked together2,523 recipes

Shared aroma: eucalyptol (eucalyptus, herbal).
Shallot + peppertop 11% of all pairs

Smell alikemoderate

Cooked together5,898 recipes

Shared aroma: 2,4-decadienal (seaweed).
Shallot + saucetop 14% of all pairs

Smell alikemoderate

Cooked together1,303 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Butter + saucetop 15% of all pairs

Smell alikelow

Cooked together15,338 recipes

Shared aroma: ethanol (alcoholic, ethereal).

Butter and sauce barely smell alike, yet cooks put them together in 15,338 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

Tench: The main protein, which becomes flaky and moist as it cooks through.
Butter or fat: Carries heat into the fish and adds richness and browning to the surface.
Shallots: Add a mild, sweet aromatic flavour that softens and perfumes the fish as it bakes.
Lemons: Their juice adds acidity that brightens the flavour and firms the fish's surface.
White sauce: Adds moisture and a creamy, smooth contrast to the baked fish.

The step that matters

Cover the fish with greased paper and bake at 350°F (175°C) for 25 to 35 minutes, depending on size.. Covering traps steam so the fish cooks gently and stays moist, while the range of time reflects that thickness and size change how long the flesh takes to turn opaque and flake. Check for flaking at the thick part of the fish before serving.