Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Christmas Morning Wife Saver
Ingredients
Directions
Assemble
Butter a 9 x 13" baking dish and arrange 8 pieces of bread to cover the bottom.
Cover the bread with cooked bacon or ham slices.
Lay slices of cheddar cheese on top, then cover with another layer of bread to make a sandwich.
In a bowl, beat eggs, salt, and pepper; add dry mustard, onion, green pepper, Worcestershire sauce, milk, and Tabasco.
Pour the egg mixture over the sandwiches.
Cover and refrigerate overnight.
Bake and serve
In the morning, preheat the oven to 350°F.
Melt ¼ lb butter and pour it over the top.
Sprinkle crushed cornflakes or Special K cereal over the butter.
Bake for 1 hour at 350°F.
Let stand for 10 minutes before serving.
Nutrition, whole recipe (rough)
What these numbers assume: 13 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Pork | 100g cooked | 242 |
| Milk | 1 cup (244ml) whole | 149 |
| Cheddar Cheese | 1 oz (28g) | 113 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Onion | 1 medium (110g) | 44 |
| Bacon | 1 slice cooked (8g) | 43 |
| Bell Pepper | 1 medium (119g) | 31 |
| Soy Sauce | 1 tbsp (15ml) | 9 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Mustard | 1 tsp (5g) yellow | 3 |
| 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.
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.
-
Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Bread + hamtop 7% of all pairsSmell alikemoderateCooked together2,536 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 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).
-
Cheddar cheese + mustardtop 11% of all pairsSmell alikemoderateCooked together708 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Bread
- Forms the base layers that soak up the egg custard and set into a tender, sliceable structure.
- Eggs
- Set when baked, binding the bread, meat and cheese into a firm, custard-like casserole.
- Milk
- Dilutes the eggs into a custard that soaks into the bread and keeps the casserole moist.
- Cheddar cheese
- Melts between the layers, adding richness, savoury flavour and a binding, gooey texture.
- Butter
- Adds fat that helps the crumb topping brown and gives a rich, golden finish.
The step that matters
Refrigerating overnight before baking. The bread needs hours to soak up the egg mixture fully; skipping this rest leaves dry pockets and a loose, uneven custard once baked.
Swap the onion
How well each one fits the dish's main ingredients (bread, ham, cheddar cheese, egg, pepper, mustard, sauce):
- Capsicumfits better
- Asparagusfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against bread, ham, cheddar cheese, egg, pepper, mustard, sauce. 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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