PREPARATION:
1st Step
Combine the meat, flour, salt, and black pepper in a bowl of medium size. Mix well. To get an equal coating, toss the steak with the flour.
2nd Step
Put the oil in a big pan and heat it over medium-high heat. After the oil has reached the rippling but not smoking temperature, add half of the steak and let it sear undisturbed for three to four minutes.
3rd Step
After about three to four minutes, turn the meat over and brown the other side. Place the steak, once it has been seared, in a bowl. The remaining steak should be seared, and then it should be transferred to the bowl.
4th Step
Reduce the heat to medium-low and then add the onions to the pan. Cook them for two minutes while stirring them regularly to make them somewhat softer. Mix in the crimson wine. Make use of a wooden spatula to remove any brown particles that have been adhered to the pan.