Ingredients

  • 2 pounds new potatoes
  • 6 tablespoons olive oil
  • 1 onion finely diced
  • 2/3 cup vegetable stock
  • 2 teaspoons dijon mustard
  • 1/4 cup balsamic vinegar
  • 1 tablespoon sugar
  • 2 sirloin steaks trimmed
  • 4 scallions trimmed and sliced
  • 5 ounces watercress
  • 2 1/2 cups arugula
  • 7 radishes thinly sliced

Method

  • Cook the potatoes in boiling, salted water for 15-20 minutes, until just tender. Drain and rinse under cold water. Peel and quarter.
  • Heat 4 tbsp oil in a large pan, add the onions, and saute for 3-4 minutes. Deglaze the pan with the stock then stir in the mustard, vinegar, and sugar and gently heat, stirring. Mix the potatoes into the dressing and marinate for 25-30 minutes.
  • Heat 2 tbsp oil in a large pan, add the steak, and sear on each side for 2-3 minutes, or until cooked to your liking. Season the steaks and wrap in foil to rest for 5 minutes.
  • Fold the scallions, watercress, arugula, and radish into the potatoes. Divide between 4 plates. Slice the steak into strips and place on top of the warm potato salad. Serve.