When it goes wrong · Roast
Meat is evenly grey from edge to centre.
Can you save it?
Reviewed for this symptom
Not recoverable to pink — the gradient is gone. Sear the outside hard in a hot pan for colour and flavour, slice thin, and serve with something moist.
How to confirm the diagnosis
Observable cues, not inferred user state
- No crust and no pink band, uniformly grey
- The oven was low for a long time
- It was never seared
Not this?
- Vegetables are soft and pale rather than browned.
- Burnt outside, raw inside.
- Nothing browns even on an empty tray.
What actually happened
Only this symptom
Oven too low for too long — the whole piece drifted to the same temperature with no gradient and no crust.
The full mechanism
Shared by every roast failure
Dry air is a poor conductor of heat compared with water or metal, which is why an oven at 200°C does not cook nearly as fast as boiling water at 100°C. That poor conduction is the point: it lets the surface reach browning temperature — above roughly 150°C — while the interior climbs slowly enough to finish at the same time. Two things spoil it. Moisture is the first: any water on the surface, or steam trapped by crowding or a lid, holds the surface at 100°C and it cannot brown until that water has gone. Contact is the second: a hot tray transfers heat far faster than the air does, so the underside browns hardest, and food touching its neighbours has no exposed surface between them and steams in the gap. This is why roasting is the technique most improved by using a bigger tray.
The full Roast lesson — how to tell, where to practise it, what it carries to.
Next time
Prevent this specific failure
Roast hot enough to build a crust, or sear first, and pull on internal temperature rather than time.
What right looks like
Shared by every roast failure
- Pieces sizzle audibly when the tray is opened; silence means the oven has lost temperature or the tray is crowded.
- The undersides are darkest, because that is where conduction rather than convection is doing the work.
- Fat has rendered and pooled rather than sitting white on the surface.
- For meat, the only reliable doneness signal is internal temperature — colour tells you about the surface and nothing about the middle.