400gmushrooms 14 oz - I used champinons but any variety works
150mlwhipping cream5 fl oz - at least 30% fat
150ml beef broth / beef stock5 fl oz - beef broth has a stronger taste, and will add to the brown colour of the sauce. Alternativley use vegetable stock /broth for a vegetarian variety.
1onionaround 60 g/ 2 oz
1teaspoondried thymeyou can also use fresh thyme if available
2tablespoonfresh parsley finley chopped
2tablespoonbutter
1tablespoontomato paste
1teaspoonbalsamic vinegar
salt and pepper
2tablespooncorn starch
Instructions
Wash the mushrooms and slice them into 0.5 cm thick slices. Peel and finely chop the onion. Chop the parsley finely.
In a frying pan heat up 1 tablespoon butter/oil/lard. Fry the mushrooms until they start to brown. Mushrooms loose water quickly, so remove them before they start to "shrink" . Set them aside for later.
Using a further tablespoon butter/oil/lard fry the onions. Add the tomato paste just when they begin to brown, and fry for a further minute. The roasted tomato paste will add to the brown colour of the sauce. Deglaze with the stock/broth and cream.
Add the mushrooms back in and season with salt and pepper to taste. Add the thyme, parsley and balsamic vinegar and cook the sauce until you achieve the desired consistency.
If you like the sauce to be thicker, mix 1 tablespoon of cornstarch/corn flour with 2 tablespoons of water to a thick paste. Add to the sauce. Bring the liquid back to a boil. If the sauce is too thick for your liking, you can add more broth.