Cut the tenderloin along the entire length, drizzle with oil, salt, pepper, grate with rosemary leaves.
Fry in a pan, turning, until browned. Transfer the tenderloin to a baking sheet and place in the oven (220 degrees) for 15 minutes.
For the sauce, thinly slice the bacon and place in a medium saucepan (or frying pan) with a splash of oil. Cut the kidney in half, remove the white streaks.
Finely chop the mushrooms and put them into the sauce with the kidney. Spice up.
Add a little wine to the sauce, boil off. Add cream and mustard. Boil until desired consistency.
Drop beans into boiling salted water. Cook until done.
Throw the beans in a colander, crush the garlic into it and sprinkle with lemon juice and oil.
Cut pork, serve with beans and sauce. Bon appetit!