Air-fryer cauliflower popcorn with soured cream & herb dressing

Name: Air-fryer cauliflower popcorn with soured cream & herb dressing
Prep time: 20 min
Cook time: 20 min
Total time: 40 min
Cuisine: European, British
Ingredients: 1 medium cauliflower (about 1kg); 125g plain flour; 25g parmesan or vegetarian alternative, grated; 1 tsp onion granules; ½ tsp dried oregano; 1 tsp paprika; 1 egg; 150ml milk; 80g panko breadcrumbs; olive oil for drizzling (optional); 150ml soured cream; pinch of onion granules; 10g chives chopped