Roast Cauliflower with Smoked Cheddar Sauce - Sarson's

Ingredients

• 1 leek
• 200ml of malt pickling vinegar
• 100ml of water
• 2 sprigs of thyme
• 2 tbsp of sugar
• 1 tsp salt, plus extra to salt the leeks
• 1 tbsp of mustard seeds
• 1 cauliflower
• 2 pinches of chopped thyme, chopped
• 1/2 tsp Dijon mustard
• 1 lemon, zested
• 50ml of olive oil
• Salt
• 100g of smoked cheddar, grated
• 25g of butter
• 25g of flour
• 1 bay leaf
• 300ml of milk
• 1 tsp Dijon mustard
• 1/2 tsp nutmeg, freshly grated
• 2 dashes of Tabasco
• 2 handfuls of pumpkin seeds
• 2 handfuls of blanched hazelnuts
• 2 handfuls of flaked almonds
• 4 rashers of smoked streaky bacon
• 1 handful of chives, finely chopped