Brown Onion Sauce Recipe with Pictures
Prepare the most flavorful brown onion sauce using butter, demi-glace, onions, and vinegar. Here is a simple step by step brown onion sauce recipe guide with pictures.

Cooking Preparation (Mise-en-place)
Assemble all the brown onion sauce ingredients on the preparation table.
- Weigh the butter and demi-glace.
- Slice the onions.
- Place the necessary equipment nearby.
How to prepare brown onion sauce.
Follow this simple procedure to the end.
Ingredients
- 500ml- demi-glace
- 50g- butter
- 200g- onions
- 4tbsp- vinegar
Nutritional Information
- Carb: 3.5g
- Protein: 3.7g
- Fibre: 1.0g
- Energy: 375kJ
- Sodium: 0.1g
- Cals: 90kcals
- Sat fat: 6.8g
- Sugar: 1.8g
Directions
1. Cook the onions.
Melt the butter in a saucepan and cook the onions until golden in colour.
2. Add the vinegar and stock.
Add the vinegar and demi-glace, and simmer for 10 minutes.
3. Season.
Skim and correct the seasoning.
Recipes by Finechef