Wash and coarsely grate the cucumbers. Salt the cucumbers and let them sit for 15 minutes to release juices.
Cut the beef into thin, bite-sized pieces and pound. Sauté the beef in oil. Season with salt and pepper. Set aside to cool.
Sauté the mushrooms in oil and set aside.
Squeeze the cucumbers dry.
Combine the cucumbers, beef and mushrooms in a bowl. Add 3-4 Tbsp. olive oil as a dressing. Stir. Add salt and pepper to taste.
Place the salad into a pretty serving bowl. Sprinkle with toasted pine nuts just before serving
