Why it works: Onion and garlic match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 29,058 recipes. Both carry furaneol, which smells caramel, strawberry. The science ↓
Ghostly Shepherd's Pie
Ingredients
Directions
Prepare the filling
Heat oven to 375°F.
Spray 12-inch skillet with cooking spray.
Add beef and onion; cook over medium heat 8–10 minutes, stirring occasionally, until thoroughly cooked; drain.
Set 12 peas aside for garnish.
Add remaining frozen vegetables, tomatoes, and gravy to beef mixture.
Heat to boiling.
Reduce heat to medium-low.
Cover and cook 8–10 minutes, stirring occasionally, until vegetables are crisp-tender.
Make the potato topping
Meanwhile, in a 2-quart saucepan, heat water, butter, and garlic powder to boiling.
Remove from heat; add milk.
Stir in dry potatoes and cheese.
Add egg; blend well.
Assemble and bake
Spoon beef mixture into ungreased 8-inch square (2-quart) or oval (2 ½-quart) glass baking dish.
With a large spoon, make 6 mounds of potato mixture on top of beef mixture to resemble ghosts.
Place 2 reserved peas on each mound to resemble eyes.
Bake 20–25 minutes or until potatoes are set and mixture is thoroughly heated.
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 |
|---|---|---|
| Beef | 100g cooked | 250 |
| Potato | 1 medium (173g) baked | 161 |
| Milk | 1 cup (244ml) whole | 149 |
| Vegetable | 1 tbsp (14g) | 120 |
| Parmesan Cheese | 1 oz (28g) | 110 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Onion | 1 medium (110g) | 44 |
| Tomato | 1 medium (123g) | 22 |
| Garlic | 1 clove (3g) | 4 |
| Water | 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.
-
Onion + garlictop 1% of all pairsSmell alikestrongCooked together29,058 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Tomato + garlictop 3% of all pairsSmell alikemoderateCooked together14,076 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Garlic + potatotop 4% of all pairsSmell alikemoderateCooked together4,517 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Tomato + potatotop 5% of all pairsSmell alikestrongCooked together2,798 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
- Ground beef
- Provides the savory meat base that forms the body of the filling.
- Dry mashed potato flakes
- Absorb the hot liquid and set into a soft, spoonable topping when baked.
- Egg
- Binds the potato topping so it sets firm and holds its mounds when baked.
- Milk
- Adds moisture and richness to the potato topping for a smoother texture.
- Beef gravy
- Adds moisture and savory flavor that binds the filling together.
- Parmesan cheese
- Adds savory, salty flavor and browning to the potato topping.
The step that matters
Add the egg to the potato mixture last and blend well. Egg proteins set when heated, so the egg must be evenly mixed into the potatoes to help the topping hold its shape rather than becoming patchy or runny.
“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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