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 ↓
Waffles
Ingredients
Directions
Make the batter
Combine sour milk and melted butter in a bowl.
Add enough flour to create a thick batter.
Mix in salt and beaten eggs.
If using sweet milk, substitute baking powder for baking soda.
Cook and serve
Cook in a well-greased hot waffle iron until golden brown.
Serve hot with butter.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Butter and flour barely smell alike, yet cooks put them together in 124,287 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, helping the batter set and hold together in the iron.
- Baking soda
- Reacts with the sour milk's acidity to produce gas that lightens the waffles.
- Flour
- Forms the gluten and starch structure that gives the waffles their body.
- Sour milk
- Provides acidity that activates the baking soda and adds tenderness.
The step that matters
Cook in a well-greased hot waffle iron. A properly hot, greased iron sears the batter's outside quickly so waffles release cleanly and brown evenly. A cool iron lets them stick and cook pale and soggy inside.
“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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