Why it works: Potato and lemon are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 2,230 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓
Common Lemon Tartlets
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the filling
Beat the eggs until very light.
Gradually add the sugar and whisk together for 5 minutes.
Stir in the potato flour or common flour.
Slowly add the lukewarm butter and beat well.
Mix in the lemon juice and grated rind.
Fill and bake
Line patty pans with thinly rolled puff pastry.
Fill the pastry two-thirds full with the mixture.
Bake in a moderate oven at 350°F (175°C) for about 20 minutes.
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.
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Potato + lemontop 12% of all pairsSmell alikemoderateCooked together2,230 recipes
Shared aroma: 2-nonenal (fatty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whisked eggs trap air and provide the structure that sets the filling.
- Pounded sugar
- Sweetens the filling and helps stabilise the whisked eggs.
- Potato flour or common flour
- Gives the filling body so it sets firm rather than runny.
- Butter
- Adds richness and a smooth, tender texture to the filling.
- Lemon juice and rind
- Provides the sharp acidity and aroma that define the tartlet flavour.
The step that matters
Slowly add the lukewarm butter and beat well. Adding warm melted butter too quickly can deflate the whisked eggs and make the filling greasy or separated. Pouring it slowly while beating keeps the emulsion smooth and the batter light.
Swap the potato
How well each one fits the dish's main ingredients (egg, sugar, butter, lemon):
- Asparagusfits better
- Leekfits better
- Shallotfits better
- Potatothe original
Fit is the average pairing score against egg, sugar, butter, lemon. 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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