What she’d tell you
This came west with Russian cooks and every country changed it a little. Mine has plenty of mushrooms and a spoon of mustard, and I make no apology for either.
Written for 4. Change that in the app and the amounts follow.
Tick things off as you get them ready.
Slice the steak into finger-width strips against the grain. Slice the onion and quarter the mushrooms.
Get half the butter very hot in a wide pan. Sear the beef in two batches, one minute a side, and lift each batch onto a plate.
Add the rest of the butter and the onion. Cook 4 minutes until soft, then the mushrooms for 5 more until they have given up their water and started to colour.
Stir in the paprika, then the beef broth. Scrape the pan and let it bubble down by half.
Turn the heat right down. Stir in the sour cream and mustard: it must not boil now.
Return the beef and its juices, warm through for 2 minutes, and taste for salt.
What she’d tell you
This came west with Russian cooks and every country changed it a little. Mine has plenty of mushrooms and a spoon of mustard, and I make no apology for either.
crème fraîche, which splits less readily if you are nervous
rump steak, sliced just as thin
Three days in the fridge. It does not freeze well: the sour cream separates.
Very gently in a pan. Never let it come to a boil or the sauce will break.