Why it works: Butter and milk 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 ↓
Nuns' Toast
Ingredients
Directions
Make the sauce
Cut four or five hard-boiled eggs into slices.
Put a piece of butter half the size of an egg into a saucepan and, when it begins to bubble, add a finely chopped onion.
Let the onion cook a little without taking color, then stir in a teaspoonful of flour.
Add a cupful of milk and stir until it becomes smooth; then put in the slices of eggs and let them get hot.
Toast and serve
Pour the sauce over neatly trimmed slices of hot buttered toast.
Season the sauce to taste with pepper and salt.
Toast thin slices of bread until an even, crisp brown.
Place the toast on a warm plate, allowing one small slice to each person.
Pour enough melted cheese over the toast to cover them.
Serve while warm.
Make the cheese topping
Spread a little prepared mustard over the toast before adding the cheese.
Put half an ounce of butter in a frying pan; when hot, add gradually four ounces of mild American cheese.
Whisk the cheese thoroughly until melted.
Beat together half a pint of cream and two eggs; whisk into the cheese.
Add a little salt.
Pour the mixture over the crisp toast and serve.
Nutrition, whole recipe (rough)
What these numbers assume: 8 portions
| Ingredient | Portion assumed | kcal |
|---|---|---|
| Flour | 1 cup (125g) all-purpose | 455 |
| Milk | 1 cup (244ml) whole | 149 |
| Cheese | 1 oz (28g) cheddar | 113 |
| Butter | 1 tbsp (14g) | 102 |
| Egg | 1 large egg (50g) | 78 |
| Cream | 1 tbsp (15ml) heavy | 51 |
| Black Pepper | 1 tsp ground (2.3g) | 6 |
| Salt | 1 tsp (6g) | 0 |
One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.
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. See the original page.
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.
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Cheese + buttertop 8% of all pairsSmell alikemoderateCooked together7,962 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Cheese + milktop 10% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Cheese
- Melts into a smooth, rich sauce that coats the toast and gives the dish its flavour.
- Eggs
- Add richness and body, and set gently when heated to thicken the topping.
- Flour
- Thickens the butter and milk into a smooth sauce that clings to the toast.
- Butter
- Adds fat and flavour, and helps the flour cook into a smooth base.
- Milk
- Makes up the liquid of the sauce, which thickens as it heats with the flour.
- Cream
- Adds richness and a softer, silkier texture to the cheese mixture.
The step that matters
Whisking the cream and eggs into the melted cheese. Eggs can scramble and turn grainy if the cheese mixture is too hot. Keep the heat low and whisk steadily so the sauce stays smooth and thick.
“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.
More welsh rarebit recipes
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.
Macaroni and Cheese102 recipes
Cheese Making50 recipes
Cheese Fritters34 recipes
Cheese Omelette31 recipes