Blanch the cauliflower for 4 minutes, drain and pat dry with kitchen paper, then roughly chop. Whisk the egg into the flour and add the milk to make a smooth batter. Season well and stir in the cauliflower. Heat 2 tbsp oil in a large frying pan and drop in spoonfuls of batter (it should make about 9 small fritters). Fry for 3 minutes until you see bubbles forming, then flip and cook for another 3 minutes until golden. Drain on kitchen paper. Stir the parsley through the peperonata and serve with fritters and salad if you like.