Potted Cheese - The Gannet

Ingredients

• 250g grated cheese (we had Quickes cheddar)
• 90g unsalted butter, at room temperature
• 2 tbsp sherry (or madeira or port)
• 1/4 tsp cayenne pepper
• 1/4 tsp ground mace
• 1/2 tsp mustard powder or prepared mustard
• A splash of Worcestershire sauce (optional)
• 60g walnuts, finely chopped (reserve some as halves for decoration)
• Melted clarified butter (optional)