The first time I tried to recreate Sauce Charmelcia (Bistro Régent style), I mainly wanted to capture that "barroom" quality: brown, glossy, creamy, with a slightly lingering flavor (in a good way). It's not a complicated sauce, but a carefully crafted one, where every little step counts: sweating the shallots, browning the mushrooms, deglazing, reducing, and then gently thickening.
I make it as a base for a white wine and brown stock sauce, enriched with cream, then enhanced with mustard and a touch of Worcestershire sauce. The mushrooms (seasonal, and perfect here) bring the umami and "bistro" character, and the shallots add sweetness.
The sauce should remain sufficiently thick: when you pass a spoon over it, the trail of sauce should close slowly.
This is a very forgiving sauce, but there are two simple rules: don't boil it vigorously after adding the cream, and let it reduce sufficiently before thickening. If you like it more robust, you can reduce it for another two minutes. If you prefer it milder, reduce the amount of mustard slightly.
On the plate, it's the perfect partner for a steak, a flank steak, or even a duck breast. And if you're the type to dip a fry "just to taste"... make sure you have plenty, because it disappears quickly!
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Charmelcia sauce (Bistro Regent style)
4
people14
minutes26
minutes223
kcal40
minutesA creamy, rich brown sauce with plenty of character: shallot, mushrooms, mustard, and a splash of white wine. It instantly evokes a classic bistro dish served with beef, fries, or green beans.
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Ingredients
2 shallots (approx. 30g per piece)
200g of button mushrooms
25g of butter
1 tablespoon of neutral oil
10 cl of dry white wine
30 cl of reconstituted veal stock (or brown stock)
15 cl of liquid whole cream (30% fat)
1 tablespoon of Dijon mustard (approx. 15g per tablespoon)
1 teaspoon of Worcestershire sauce (approx. 5g per teaspoon)
1 teaspoon of tomato paste (approx. 5g per teaspoon)
1 teaspoon of cornstarch (approx. 3g per teaspoon)
1 pinch of thyme (optional)
Fine salt, black pepper
Preparation steps
- Peel and finely chop the shallots. Clean the mushrooms and slice them (not too thin: they should retain some texture).
- In a saucepan, heat the butter with the oil. Add the shallots, season very lightly with salt and sweat them for 2 to 3 minutes over medium heat, without browning.
- Add the mushrooms. Turn up the heat a little and brown them for 6 to 8 minutes: they'll release their water first, then start to stick slightly. That's when the "bistro" flavor comes in.
- Add the tomato paste and mix for 30 seconds to lightly toast it (this rounds it out and gives it a nice color).
- Deglaze with white wine. Scrape the bottom well with a wooden spoon, then let it reduce for 3 to 4 minutes: there should be barely 2 to 3 tablespoons of liquid left.
- Pour in the veal stock. Add the pinch of thyme, if using. Simmer and reduce for 10 to 12 minutes, until the sauce begins to coat the back of a spoon.
- In a small bowl, dissolve the cornstarch in 2 tablespoons of cold water. Pour into the saucepan, whisking constantly. Let it simmer for 1 minute: the sauce should become glossy and slightly thicker.
- Lower the heat. Add the cream, then the mustard and Worcestershire sauce. Mix thoroughly and heat for 2 minutes without boiling vigorously (just a simmer).
- Taste and adjust: add a generous amount of black pepper, and salt if needed. If the sauce is too thick, thin it with a splash of water or stock. If it's too thin, let it simmer for another 2 minutes.
- Serve immediately, piping hot, as a topping over the meat, with fries or vegetables.
📊 Nutritional Information
1 serving (approx. 180g)
| Nutrient | Value |
|---|---|
| Calories | 223 kcal |
| Proteins | 4g |
| Carbohydrates | 9g |
| including sugars | 4g |
| Lipids | 17g |
| including saturated fatty acids | 10g |
| Fibers | 1g |
| Sodium | 620mg |
| Vitamins | |
| Vitamin B2 | 18% AJR |
| Vitamin B3 | 16% AJR |
| Vitamin B9 | 12% AJR |
| Minerals | |
| Potassium | 11% AJR |
| Phosphorus | 9% AJR |
| Selenium | 8% AJR |
* RDA = Recommended Daily Allowance
📝 Notes
If you are preparing the Charmelcia sauce recipe in advance, reheat it over very low heat, adding 1 to 2 tablespoons of water or stock to achieve the right consistency, without boiling it.
💡 Chef's Tips
For an even more "restaurant-style" texture, blend the Charmelcia sauce with an immersion blender for 5 seconds at the end of cooking (just to smooth it out a bit), then adjust the seasoning. And if your stock is already quite salty, only add salt at the very end.
🔄 Variations
- Bistro version but more peppery: add 1/2 teaspoon of crushed pepper at the same time as the mushrooms.
- For a more "mushroom-like" version: keep a few golden slices aside and add them at the end for a more indulgent effect.
