1 garlic clove, smashed
½ onion, cut into wedges
small bunch fresh thyme, roughly chopped
1 tbsp Dijon mustard
85g/3oz plain flour
1 bay leaf
85g/3oz butter, plus extra for greasing
55g/2oz mature cheddar, grated
200ml/7fl oz double cream
6 free-range eggs, separated
55g/2oz ³Ò°ù³Ü²âè°ù±ð, grated
425ml/¾ pint milk
50²µ/¾´Ç³ú Parmesan, grated