Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
German Frying Batter
Ingredients
Directions
Make the batter
Mix flour, melted butter, egg yolk, and water in a bowl.
Add a pinch of salt and gradually stir in the mild ale until smooth.
Beat the mixture with a wooden spoon until well blended.
Let the batter rest for 2 to 3 hours before using.
Finish and fry
Just before frying, fold in the beaten egg white until combined.
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.
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
Flour and butter 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
- All-purpose flour
- Forms the main structure of the batter as its proteins and starches set when fried.
- Egg yolk
- Adds richness and helps bind the batter so it coats evenly.
- Mild ale
- Adds liquid and a little carbonation that helps the batter puff up lightly.
- Egg white
- Whipped into the batter just before frying to add lightness and airiness.
The step that matters
Folding in the egg white just before frying. Beaten egg white traps air that gives a light, crisp coating. If it is folded in too early or stirred vigorously, it deflates and the batter becomes dense.
“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.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Delicate Cake246 recipes
Boiled Frosting69 recipes
Citron Cake68 recipes
Scotch Cake63 recipes