Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Communion Bread
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.
Prepare
Preheat the oven to 350°F (175°C).
In a bowl, mix the powdered sugar, butter, egg whites, milk, ammonia, and lemon flavor until well combined.
Shape and bake
Roll out the mixture thinly into a sheet.
Place on a baking pan and mark out in half-inch strips.
Bake in the preheated oven until well done.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + eggtop 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
- Egg whites
- Provide protein that sets during baking, giving the sheet its structure.
- Butter
- Adds fat that tenderizes the texture and carries flavor.
- Powdered sugar
- Adds sweetness and dissolves smoothly into the mixture for a fine texture.
- Milk
- Supplies moisture and helps the mixture bind and brown lightly.
- Ammonia
- Acts as a leavening agent that releases gas as it heats, lightening the sheet.
The step that matters
Roll out the mixture thinly. Thickness controls how evenly the sheet bakes and dries. A thin, even sheet bakes through uniformly, while thick spots stay soft or scorch at the edges.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, egg, milk):
- Vanillafits better
- Figfits about as well
- Coconutfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, butter, egg, milk. 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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