500g/1lb 2oz trimmed cauliflower florets, cutin 3cm/1录in chunks
1 stick celery, finely chopped
1 tbsp finely snipped chives
1 medium-sized floury potato, such as Maris Piper, peeled and roughly chopped
1 garlic clove, crushed
录 tsp garlic granules
1 large onion, finely chopped
1 tsp Dijon mustard
1 tsp Worcestershire sauce (optional)
1 bay leaf
salt and freshly ground black pepper
pinch cayenne pepper
1 tbsp olive oil
2 tbsp olive oil
400ml/14fl oz vegetable stock (from bouillon powder)
25g/1oz unsalted butter
100g/3陆oz mature cheddar, grated
50g/1戮oz mature cheddar, grated
400ml/14fl oz full-fat milk
3 x 1cm/陆in thick slices sourdough bread