Why it works: Lemon and cinnamon match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 7,950 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Hamburg Zwieback
Ingredients
Directions
The book says “a cool oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the dough
In a large bowl, combine the milk, yeast, sugar, butter, eggs, lemon extract, and cinnamon extract to make a slack dough.
Set the dough in a warm place to rise.
When it has risen halfway, turn the dough onto a floured surface and divide it into pieces no larger than 1 pound.
Return the pieces to rise again, repeating this process four or five times until the dough is ready.
Shape and bake
Shape the dough into round balls and place them on baking pans, ensuring they do not touch.
Allow them to rise until doubled in size, then bake in a preheated oven at 350°F (175°C) until light brown.
Let the baked zwieback cool for 6 to 8 hours.
Toast and store
Once cooled, cut each piece in half with a sharp knife, place them cut side up on pans, and dry-toast in a cool oven until browned.
Reassemble the tops and bottoms and store for later use.
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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Lemon + cinnamontop 7% of all pairsSmell alikestrongCooked together7,950 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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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 + cinnamontop 10% of all pairsSmell alikemoderateCooked together12,655 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
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Sugar + cinnamontop 10% of all pairsSmell alikelowCooked together30,779 recipes
Shared aroma: guaiacol (smoky, sweet).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and cinnamon barely smell alike, yet cooks put them together in 30,779 recipes: they 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
- Eggs
- Add structure and richness to the dough, helping it set as it bakes.
- Butter
- Adds fat for tenderness and a richer crumb in the finished zwieback.
- Yeast
- Produces gas that makes the dough rise between each division and proof.
- Sugar
- Feeds the yeast and adds sweetness and gentle browning during baking and toasting.
- Milk
- Provides the liquid that hydrates the flour and forms the dough.
The step that matters
Dry-toasting the halved zwieback. Toasting slowly in a cool oven dries the crumb evenly so it becomes crisp throughout. Too much heat browns the outside before the inside has dried, leaving it soft in the middle.
Swap the lemon
How well each one fits the dish's main ingredients (milk, sugar, butter, egg, cinnamon):
- Vanillafits better
- Figfits better
- Raisinfits better
- Lemonthe original
Fit is the average pairing score against milk, sugar, butter, egg, cinnamon. 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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