1 small head cauliflower
large pinch chilli flakes
½ tsp Dijon mustard
300g/10½oz macaroni
40g/1½oz plain flour
salt and freshly ground black pepper
2 tbsp fresh white breadcrumbs
1 tsp caraway seeds
40g/1½oz butter
400g/14oz strong cheddar, grated
800ml/1 pint 8fl oz milk
100ml/3½fl oz single cream