This is a wonderful steak dish that was prepared for me when I lived in Argentina - it's popular in various restaurants around Buenos Aires.
Great recipe! I loved the marinade. I added some minced fresh garlic, olive oil, and worcestershire sauce. I just eyeballed everything and put everything into a ziploc bag. I didn't prepare the steaks in a skillet, I put them on the grill. The smokiness from the fresh rosemary is a nice accompaniment to the steaks. These go great with baked potatoes on the grill and a fresh garden salad. - 23 Mar 2010 (Review from Allrecipes USA and Canada)
I was skeptical about this recipe and took some of the others advice. After removing the steaks I added garlic and minced onion to the pan, sauteed for a few minutes then added the wine mixture. I reduced the wine mixture to about 1/3 cup then removed from the heat and added 2 teaspoons butter. My company all enjoyed it and really liked the flavors. - 14 Jun 2007 (Review from Allrecipes USA and Canada)
Nice, I removed the steaks before doing the reduction and added a little garlic and butter which thickens the sauce and adds a bit of flavour. The end result is going to depend on the quality of the wine, another substitution would be to use balsamic vinegar to deglaze instead of the wine. - 23 Nov 2004 (Review from Allrecipes USA and Canada)