Herbed Potato Salad

from NZ Herald Viva section - very scrummy & just what we need with summer & BBQ time

• 500g waxy potatoes - depending on size halved or quartered - cook lightly & cool
• 3 gherkins finely diced
• 1 Tbsp capers
• 1 small red onion finely sliced
• 2 Tbsp fresh herbs finely chopped (dill, chervil or Italian parsely)
  

Mix the following ingredients separately

• 2 Tbsp creme fraiche
• 2 tsp wholegrain mustard
• 1 Tbsp fresh lemon juice
  
• 1 tsp finely grated lemon zest
• salt & pepper

Combine all gently & refrigerate before serving