Herby potato salad with crisp topping

Name: Herby potato salad with crisp topping
Prep time: 15 min
Total time: 15 min
Yield: 4 porties
Cuisine: Belgian
Ingredients: Dijon mustard; extra virgin olive oil; red wine vinegar; caster sugar; sea salt; ground black pepper; water; new baby potatoes; spring onions/green onions; fresh parsley