Cauliflower soup with bacon dust

Name: Cauliflower soup with bacon dust
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Cuisine: British, European
Ingredients: 150 g rindless bacon rashers; 60 g Parmesan cheese, crust removed and cut into pieces (3 cm); 900 g water; 3 tsp Vegetable stock paste (see Tips); 950 g cauliflower, cut into small florets (3 cm); 2 pinches sea salt, to taste; 3 pinches ground black pepper, to taste; 25 g butter or olive oil, to taste