Potato velouté

Name: Potato velouté
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 2 servings
Ingredients: 1 pinch of Black pepper; 1 handful of Croutons; 50 ml of Double cream; 1 sprinkle of Dry chives; 1 pinch of Fine sea salt; 300 gr of Maris piper potato; 1 ml of Semi skimmed milk; 1 slice of Unsalted butter; 1 Vegetable stock cube; 0.5 White onion