The encyclopaedia of gravy
Six ways to make gravy darker, ordered from the ones that also improve flavour to the ones that only change the colour.
Pale gravy tastes weaker than dark gravy even when it isn't, because we read colour as flavour before we taste anything. Here is how to get the colour, in order of how much flavour each method adds.
1. Brown your aromatics properly (best)¶
Onions cooked for 25 minutes until deep brown, or a vegetable trivet roasted under the joint, are the biggest single contributor to both colour and flavour. See onion gravy and roast-dinner gravy.
2. Take the roux further¶
A roux cooked for 6–8 minutes to the colour of milky coffee adds a toasted flavour and a noticeably darker gravy. Remember darker roux thickens less, so use a little more.
3. Deglaze a well-browned tin¶
The fond is almost black-brown and dissolves straight into the liquid. A properly roasted joint gives you this for free — see deglazing a roasting tin.
4. Cook out tomato purée¶
A tablespoon fried in the fat for two minutes until it darkens adds colour, sweetness and umami. Do not skip the frying; raw purée tastes tinny.
5. Umami and dark liquids¶
- Yeast extract — ½ tsp, dark and savoury.
- Dark soy sauce — 1 tsp, darkens dramatically.
- Stout or red wine, reduced.
- Balsamic vinegar — a teaspoon, dark and sharp at once.
- A spoon of redcurrant jelly or black treacle — both darken; treacle is powerful, use ¼ teaspoon.
6. Gravy browning (colour only)¶
Gravy browning is caramelised sugar in water, sometimes with salt. It adds colour and a faint bitterness, and essentially no flavour. A few drops at the end will take a pale gravy to a deep mahogany instantly.
There is nothing wrong with it — it is a British store-cupboard staple and it is what most commercial gravies use. Just do not expect it to fix a gravy that tastes thin. Colour is not flavour, even though we taste it as though it were.
⚠️ Burnt is not dark
There is a real limit. Scorched flour, black fond or burnt onions give bitterness that no amount of seasoning will cover. Dark brown and glossy is the target; matte black is the bin.