Name: Potatoes a LA Bechamel
Ingredients: cold potatoes; butter; Bechamel sauce; buttered crumbs

Why it works: Potato and butter match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and 6,445 recipes mention both. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

The recipe

Oven, in the book's wordsA hot oven

Ingredients

Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)

cold potatoes
butter
Bechamel sauce
buttered crumbs

Directions

The book says “a hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

Cut cold potatoes into cubes.
Place the potato cubes in buttered dishes.

Assemble and bake

Cover the potatoes with béchamel sauce.
Sprinkle buttered crumbs over the top.
Bake in a 400°F (200°C) oven for fifteen minutes until browned.

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 aroma chemistry they share, and how many recipes mention both.

Potato + buttertop 6% of all pairs

Aroma overlapstrong

Mentioned together6,445 recipes

Shared aroma: (z)-4-heptenal (biscuit, cream).
Butter + saucetop 8% of all pairs

Aroma overlaplow

Mentioned together15,317 recipes

Shared aroma: ethanol (alcoholic, ethereal).
Potato + saucetop 14% of all pairs

Aroma overlaplow

Mentioned together1,072 recipes

Shared aroma: ethanol (alcoholic, ethereal).

Butter and sauce share little aroma chemistry, yet 15,317 recipes mention both: they likely work on texture and structure more than aroma.

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

What each ingredient does

Cold potatoes: Form the main body of the dish, holding the sauce and crumbs around them.
Butter: Adds richness and helps the crumbs brown in the oven.
Bechamel sauce: Adds creamy moisture that coats the potatoes and keeps them from drying out.
Buttered crumbs: Form a golden, crisp topping through browning in the oven.

“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.