Bacon and Spring Onion Potato Salad

Salad

• 2 spring onions, trimmed, cut in thirds, plus extra finely sliced for garnishing
• 150 g bacon cubes
• 20 g olive oil
• 500 g water
• 1000 g potatoes, peeled, cut in pieces (2 cm)
• 6 medium eggs

Dressing

• 200 g mayonnaise (see tip)
• 20 g wholegrain mustard
• 2 tsp balsamic vinegar

Assembly

• 60 g Parmesan cheese, shaved, plus extra for garnishing
• 1 pinch ground black pepper, or to taste