Watercress, new potato & salmon salad - Good Food Middle East

Ingredients

• 600g baby new potatoes
• 6 tbsp olive oil
• 1 tbsp Dijon mustard
• 2 tbsp white wine vinegar
• 1 small finely diced red onion
• 1 crushed garlic clove
• 2 tbsp capers
• 1 pack chives, snipped
• 2 x 213g cans salmon, flaked into bite-size pieces
• handful watercress