Step 1

Dressing: Shake in a jar.

Step 2

Halve so they are about 2.5cm / 1" pieces (cut large ones into 3).

Step 3

Bring 4 litres / 4 quarts water to the boil, add salt. Add potatoes, bring back up to the boil then reduce to simmer. Cook for 5 minutes or until just cooked - don't let them overcook or become too soft, they will keep cooking from residual heat.

Step 4

Drain and immediately transfer to a bowl.

Step 5

While potatoes are hot, pour over half the Dressing. Use rubber spatular to gently stir.

Step 6

Set aside to marinate for at least 30 minutes, even overnight.

Step 7

Add green onions and parsley, pour over remaining Dressing. Carefully toss with rubber spatular, then serve. Great warm or at room temperature, and it's also great the next day.