Creamy Mashed Potato

Bahan-bahan (6 porsi)

• 1.5 kg / 3 lb potatoes, peeled and cut into 2.5cm/1” cubes ((Preferably Sebago, Russet or Maris Piper, Note 1))
• 1 tbsp salt ((for cooking))
• 60 g / 4 tbsp unsalted butter (, chopped)
• 1/2 cup milk (, preferably warmed)
• 1/2 tsp salt
• Extra melted butter
• Chives or parsley (, chopped)