Why it works: Pepper and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Spanish Omelet
Ingredients
Directions
Make the egg batter
Beat the egg whites until dry; beat the yolks until light-colored and thick.
Add 2 tablespoons milk to each egg, 1/2 teaspoon salt, and a dash of white pepper to the yolks.
Mix the yolk mixture thoroughly, then fold in the beaten whites.
Make the Spanish filling
Prepare the Spanish filling: put canned tomatoes in a white-lined saucepan and heat.
Cut 3 slices of bacon into cubes and brown them in a skillet.
Pour the bacon fat and the browned bacon into the tomatoes.
Add 3 small onions cut fine, 1 small red pepper broken fine, and a teaspoon of salt to the tomatoes.
Cook until the water has evaporated.
Cook and fill the omelet
Heat a pan over moderate heat and butter it.
Pour the egg mixture into the pan, spreading it evenly.
Let the omelet stand about 2 minutes.
Transfer the pan to the oven and cook the top lightly until a knife inserted comes out nearly clean.
Remove the omelet from the oven.
Fold the part nearest the handle over the other part, covering it with Spanish filling and reserving some for the top.
Fold the prepared filling into the omelet, reserving some for the top.
Nutrition, whole recipe (rough)
What these numbers assume: 8 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Milk | 1 cup (244ml) whole | 149 |
| Egg | 1 large egg (50g) | 78 |
| Onion | 1 medium (110g) | 44 |
| Bacon | 1 slice cooked (8g) | 43 |
| Tomato | 1 medium (123g) | 22 |
| Chili | 1 tsp (2.7g) | 8 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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. See the original page.
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.
-
Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Milk + tomatotop 15% of all pairsSmell alikemoderateCooked together2,226 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
-
Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whipped whites and yolks provide the structure that sets into the omelet.
- Milk
- Adds moisture and tenderness to the eggs as they cook.
- Bacon
- Its rendered fat adds richness and savory browning to the filling.
- Tomatoes
- Provide acidity and liquid that becomes the body of the filling.
- Onions
- Add sweetness and aroma as they cook into the filling.
The step that matters
Cook the top lightly in the oven. Eggs turn rubbery and dry when overcooked. Removing the omelet while the top is still slightly moist lets residual heat finish the set gently.
Swap the white pepper
How well each one fits the dish's main ingredients (milk, pepper, egg, onion, tomato):
- Garlicfits better
- Parsleyfits better
- Thymefits better
- White pepperthe original
Fit is the average pairing score against milk, pepper, egg, onion, tomato. 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.
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
Cream of Tomato Soup107 recipes
Tomato Bisque61 recipes
Cream Tomato Soup28 recipes