Boil or steam the potatoes for about ten minutes.
Heat some oil in a pot and sauté the garlic and onion.
After a minute, add the green beans.
Let this stew for a few minutes, then deglaze with the white wine.
Let the wine evaporate and reduce. Finally, add the spices and diced tomatoes. Let this simmer on low heat.
Heat some butter in a pan and fry the potatoes over medium-high heat. Stir them regularly so they brown evenly on all sides.
Season the turkey fillets with pepper and salt on both sides.
Heat some butter in a second pan and fry the turkey fillets until golden brown on both sides.
Finally, serve the green beans in tomato sauce, the fried potatoes, and the turkey fillet nicely on plates and serve warm.