Name: Ham Au Gratin
Ingredients: 2 cups milk; 3 eggs; freshly chopped ham; stale bread crumbs; salt to taste; cayenne pepper to taste

Why it works: Ham and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 2,536 recipes. Both carry 2-acetyl-1-pyrroline, which smells popcorn, roasted. The science ↓

Ham Au Gratin

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

Preheat the oven to 350°F (175°C).
In a bake dish, layer freshly chopped ham and stale bread crumbs alternately.

Bake

In a bowl, mix milk, beaten eggs, salt, and cayenne pepper.
Pour the milk mixture over the layers in the bake dish.
Bake for 30 minutes.

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.

Ham + breadtop 7% of all pairs

Smell alikemoderate

Cooked together2,536 recipes

Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
Milk + breadtop 11% of all pairs

Smell alikemoderate

Cooked together11,466 recipes

Shared aroma: 2-undecenal (sweet).
Egg + breadtop 13% of all pairs

Smell alikemoderate

Cooked together22,662 recipes

Shared aroma: (e)-2-octenal (fatty, green).
Bread + peppertop 16% of all pairs

Smell alikemoderate

Cooked together20,964 recipes

Shared aroma: 2-nonenal (fatty, green).
Egg + hamtop 17% of all pairs

Smell alikemoderate

Cooked together4,526 recipes

Shared aroma: 2,4-decadienal (seaweed).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Eggs: Set the custard, binding the milk and bread into a firm, sliceable dish when baked.
Milk: Forms the liquid custard that soaks into the bread and sets with the eggs.
Stale bread crumbs: Absorb the milk mixture and give the dish body and a soft, pudding-like texture.
Ham: Adds savory, salty flavor and meaty substance between the bread layers.

“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.