Why it works: Milk and butter 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 ↓
Other German Zwieback
Ingredients
Directions
Make the dough
Warm the milk and dissolve the yeast in it to create a light sponge.
Once ready, mix in the remaining ingredients to form a smooth dough.
Let the dough rise and knead it twice.
Shape and proof
Break the dough into small pieces, about ½ ounce each, and shape them into 3-inch long fingers.
Place the fingers close together on baking pans so they touch each other.
Allow the dough to proof well before baking.
Bake and toast
After baking, let the Zwieback cool for one day.
Slice the cooled Zwieback and place the slices on pans to toast until golden brown.
If the oven is too hot, cool the Zwieback and return it to the oven to finish drying.
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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Milk + buttertop 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).
-
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
- Add structure and richness to the dough as they set during baking.
- Yeast
- Produces gas that makes the dough rise and gives it a light, airy crumb.
- Butter
- Adds fat for tenderness and a rich flavour in the dough.
- Sugar
- Feeds the yeast and adds sweetness and browning during toasting.
- Milk
- Provides the liquid that hydrates the flour and forms the initial yeast sponge.
The step that matters
Let the dough proof well before baking. Under-proofed dough bakes dense because the yeast has not produced enough gas to lighten the crumb. Fully proofed dough gives a lighter texture that toasts evenly.
Swap the mace
How well each one fits the dish's main ingredients (milk, egg, sugar, butter, lemon):
- Cinnamonfits better
- Nutmegfits better
- Parsleyfits better
- Macethe original
Fit is the average pairing score against milk, 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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