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Fennel Dauphinoise
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Method
- Heat oven to 180C/160C fan/gas 4. Put potatoes, fennel, and garlic in a medium non-stick pan. Pour in milk and double cream, season well and simmer gently, covered, for 10 mins, stirring halfway through, until potatoes are just tender.
- Divide the mixture between 2 small (about 150ml) buttered ramekins and scatter with Parmesan. Bake for 40 mins until the potatoes are golden and tender when pierced with a knife. Snip the reserved fennel fronds over before serving.
Cooking notes
Scaling works best when you weigh ingredients rather than measure by volume — small differences in packing can compound at higher multipliers.
For volume-to-weight conversions of any ingredient — flour, sugar, butter, salts — use the ingredient converter. To translate the recipe's oven temperature between °C, °F and gas mark, see the temperature converter.
When you scale this recipe up or down, remember that cooking time does not scale linearly. A doubled cake takes longer, but not twice as long; a doubled soup takes roughly twice as long. The cooking-time guide gives sensible starting estimates by dish geometry.
Recipe video
Fennel Dauphinoise
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Each opens in a new tab so the timer keeps running. The math is auditable on the guide page below each converter, with worked examples and where the numbers come from.
Volume
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OpenTemperature
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OpenCooking time
The cube-root rule for scaling up, the differences between meat / cake / soup geometry, and sensible starting estimates.
OpenPan size
9-inch round vs 8-inch square vs 13×9. The math is surface area, not diameter — and the converter shows you both.
OpenLength
Inches and centimetres — for when a recipe says “cut into 1-inch pieces” and your ruler is metric.
OpenIngredient density
A cup of flour weighs 120 g; a cup of honey weighs 340. The full table of ~40 staples, with sources.
OpenOpen in main scaler
Edit the recipe text, scale by serving count, and copy the result. Same parser as the in-page scaler, more room to work.
OpenFrom the journal
Original essays on the small details.
The why behind the technique — original writing on the ingredient and equipment choices that separate a good cook from a frustrated one.
Eggs by weight, not by count
Why your four-egg recipe might really be a five-egg recipe
Read essayApril 12, 2026
The case for the oven thermometer
Your oven is probably lying to you, and here's how to catch it
Read essayFebruary 28, 2026
Butter temperature ruins more cookies than the oven does
Cold, softened, melted — three states, three completely different bakes
Read essayDecember 15, 2025
Go deeper
Where this recipe sits in the wider tradition.
Each guide below is a real essay on the cuisine or the category — pillars, staples, techniques worth learning — paired with a curated grid of recipes filed under it.
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