Heat a large high-sided pan over medium-high heat. Working in 2-3 batches, sear the beef strips in the clarified butter for 2-3 minutes per batch until browned. Transfer to a plate and season with salt and pepper.
In the same pan over medium heat, cook the diced onion for 2 minutes. Add the sliced mushrooms and cook for 2 minutes, stirring frequently. Add the gherkin strips, garlic, black pepper, salt, hot paprika, and 2 tablespoons hot mustard. Cook for 1 minute.
Stir in the honey until dissolved. Pour in the dry white wine and scrape up any browned bits from the bottom of the pan.
Reduce heat to low and return the beef strips to the pan. Stir in the fresh cream and sour cream. Simmer gently for 15 minutes, stirring occasionally. Taste and adjust seasoning with salt, pepper, and additional wine if needed.
Serve over spaetzle or potato noodles with a fresh salad.
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