Making Proper Onion Gravy
This is a working-kitchen staple designed to stand up to roast meats or mashed potatoes. Avoid the temptation to rush the browning stage, as raw or pale onions will result in a thin, watery sauce.
Color is flavor
Your onions will shrink significantly, so do not be intimidated by the volume in the pan at the start. Use a heavy-bottomed skillet to ensure even heat distribution.
- heavy-bottomed skillet or saucepan
- wooden spoon
- whisk
What goes in.
- 3 largeyellow onions, halved and sliced into half-moons
- 2 tbspunsalted butter
- 1 tbspall-purpose flour
- 2 cupsbeef stock
- 1 tspfresh thyme leaves
- to tastekosher salt and black pepper
Don't stop at translucent
Onions move from translucent to golden in 10 minutes, but they need another 15 to reach the dark, sweet, amber state required for a robust gravy.
The method.
Melt the butter in the skillet over medium-low heat.
Add the sliced onions and a pinch of salt. Stir to coat them in the fat.
Cook the onions slowly.
Keep the heat low. Stir every few minutes. They are ready when they have reduced by two-thirds and reached a dark, rich brown color.
Incorporate the flour.
Sprinkle the flour over the onions and stir constantly for 2 minutes to cook out the raw flour taste.
Deglaze and simmer.
Pour in the beef stock gradually, whisking as you go to prevent lumps. Add the thyme and simmer for 10 minutes until the gravy thickens enough to coat the back of a spoon.
Final seasoning.
Taste before adding salt, as the stock may already be seasoned. Add fresh cracked pepper.
Other turns to take.
Red Wine Onion Gravy
Replace half a cup of the stock with a dry red wine, adding it after the flour has cooked and before the stock.
Mustard Gravy
Whisk in a tablespoon of whole-grain mustard at the very end for a sharper finish.
When it doesn't go to plan.
If the onions catch on the bottom of the pan, add a tablespoon of water to scrape up the dark bits (the fond).
Use a cast iron skillet if you have one; the heat retention helps maintain a steady, gentle caramelization.
If the gravy becomes too thick, whisk in a splash more stock or hot water until you reach your desired consistency.
The ones that keep coming up.
Why is my gravy pale?
The onions were not cooked long enough. If the onions are light yellow, the gravy will lack depth.
Can I use vegetable stock?
Yes, but use a dark, mushroom-based vegetable stock to mimic the body and color of beef stock.
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