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 ↓
Cheese-topped Tuna Casserole
Ingredients
Directions
Prepare the filling
Cook onion in butter in small skillet until tender but not brown.
Stir in rice, tuna, soup, lemon juice, salt and pepper.
Turn into greased shallow 6-inch baking dish or individual casseroles.
Bake and serve
Bake at 350°F for 20 minutes or until thoroughly heated.
Top with cheese and bake 5 minutes longer.
Nutrition, whole recipe (rough)
Counts 10 of 11 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.
What these numbers assume: 10 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Salmon | 100g cooked | 208 |
| Rice | 1 cup cooked (158g) white | 206 |
| Cheddar Cheese | 1 oz (28g) | 113 |
| Butter | 1 tbsp (14g) | 102 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Onion | 1 medium (110g) | 44 |
| Lemon | juice of 1 lemon (48ml) | 12 |
| Celery | 1 stalk (40g) | 6 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
| Soup | 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.
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 their aromas overlap, and how often cooks already put them together.
-
Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Celery + lemontop 3% of all pairsSmell alikestrongCooked together3,467 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Celery + peppertop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + celerytop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Rice + celerytop 7% of all pairsSmell alikemoderateCooked together2,169 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tuna
- Provides the main protein and flavor base of the casserole.
- Condensed cream of celery soup
- Binds the rice and tuna together and adds moisture and savory flavor.
- Cooked rice
- Adds bulk and body, absorbing moisture from the soup.
- Cheddar cheese
- Melts over the top and browns lightly, adding richness and flavor.
- Onion
- Adds aromatic sweetness and savory depth once softened in butter.
The step that matters
Cook the onion until tender but not brown. Softening the onion gently in butter draws out its sweetness and mellows its sharp raw bite. Browning it would add bitterness and a different flavor that clashes with the mild, creamy casserole.
Swap the lemon
How well each one fits the dish's main ingredients (onion, butter, rice, cream, celery, pepper, cheddar cheese):
- Avocadofits better
- Coconutfits about as well
- Limefits about as well
- Lemonthe original
Fit is the average pairing score against onion, butter, rice, cream, celery, pepper, cheddar cheese. 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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