1 medium cauliflower, stalk removed, florets separated
1 tbsp Dijon mustard
40²µ/1Β½΄Η³ϊ plain flour
sea salt and freshly ground black pepper
2 tbsp maple syrup
100²µ/3Β½΄Η³ϊ butter
300g/10Β½oz extra mature cheddar, grated
500ml/18fl oz milk
20 rashers streaky bacon or pancetta
3 slices brioche, blitzed to crumbs in a food processor