Why it works: Potato and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and 8,303 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
The recipe
Ingredients
Contains: milk (auto-detected from the ingredients and method; we can miss things, so check labels)
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
Peel and slice the potatoes thinly.
Layer the potatoes in a greased baking dish.
Assemble and bake
Pour the cream over the potatoes.
Dot with butter and season with salt and pepper.
Bake in a moderate oven at 350°F (175°C) until tender and golden brown.
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 + peppertop 5% of all pairsAroma overlapstrongMentioned together8,303 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Cream + buttertop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Potato + buttertop 6% of all pairsAroma overlapstrongMentioned together6,445 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Potato + creamtop 8% of all pairsAroma overlapmoderateMentioned together2,481 recipes
Shared aroma: gamma-decalactone (peach, creamy).
-
Butter + peppertop 11% of all pairsAroma overlapstrongMentioned together85,512 recipes
Shared aroma: ethyl octanoate (fruity, wine).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Form the bulk of the dish and turn tender as they cook through the cream.
- Cream
- Adds richness and moisture, coating the potatoes as they bake into a silky sauce.
- Butter
- Adds fat and flavor and helps the top brown as it bakes.
The step that matters
Bake until tender and golden brown. Thin potato slices need enough time for the starch to soften fully, while the cream thickens. Pulling the dish too early leaves the potatoes firm inside, and too long can dry the top or split the cream.
“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.
More potato gratin recipes
You might also like
Illustration
Illustration
Illustration
IllustrationThe Sunday pairing: one pairing, the chemistry behind it, and how to cook it. No spam, unsubscribe anytime.
Prefer an account? Create a free account for sign-in; Pro adds the full results and chemistry.