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 ↓
Oatmeal Biscuits
Ingredients
Directions
Make the dough
Melt the lard or butter in a saucepan over low heat.
In a bowl, combine the flour, oatmeal, castor sugar, and carbonate of soda.
Stir in the melted lard or butter.
In a teacup, mix the cold water and egg together.
Add the egg mixture to the dry ingredients and mix until smooth.
Shape the biscuits
Flour a surface and turn the dough out onto it.
Roll out the dough as thin as possible using a floured rolling pin.
Use a floured tumbler to cut the dough into biscuits.
Grease a baking tin with butter and place the biscuits on it.
Bake and serve
Bake in a preheated oven at 400°F (200°C) for 20 minutes.
Remove the biscuits from the tin and let them cool before serving.
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.
Photo for illustrative purposes only · Contact us to use it
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 + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
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).
-
Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Flour
- Provides the main structure that holds the biscuits together.
- Oatmeal
- Adds a hearty, slightly crumbly texture and nutty flavour.
- Lard or butter
- Adds fat for tenderness and a short, crisp bite.
- Egg
- Binds the dough and adds richness to hold the biscuits together.
- Carbonate of soda
- Reacts with other ingredients to give a small amount of lift and browning.
- Castor sugar
- Sweetens the biscuits and helps them brown in the oven.
The step that matters
Roll the dough as thin as possible. Thin dough bakes evenly and crisps through, while thick dough stays soft and doughy in the centre. Flouring the surface and pin keeps the dough from sticking and tearing.
“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.

White Cake431 recipes
Pound Cake373 recipes
Orange Bundt Cake349 recipes
Spice Cake344 recipes