There was plenty of broccoli in the biokiste, pairing it with beef seemed almost too obvious.
Cut some thin steaks into bite-sized pieces. Sear them in neutral oil and then set aside.
Stir fry onion, broccoli, and diced kohrabi (it was in the fridge). Set aside.
Stir fry garlic, ginger, garlic-bean paste, and black beans (soaked in sherry and then drained) until aromatic. Add the vegetables and sherry from the black beans along with a bit of black vinegar and enough water to make a sauce. Add corn starch slurry to get the sauce to the texture you want. Just before serving add the beef and let it heat through.
Serve with short-grain rice.