Apple and fennel Sausage roll

Ingredients

• 2 tbsp butter
• 1 red onion
• 1/2 fennel
• 1 apple
• 2 tsp sugar
• 2 tbsp apple cider vinegar
• 1/2 tsp chili flakes
• 500 g Pork mince
• 1 egg yolk
• 2 garlic
• 1 tbsp Thyme leaves
• 1 tsp salt
• 1 tsp pepper
• 1 tbsp Melted butter
• 1 pinch cayenne pepper
• 1/4 scoop breadcrumb
• 1 tbsp Worcestershire sauce
• 1 sprig rosemary
• 1 head parsley
• 1 pinch sesame seed
• 2 Egg wash
• 1 pinch fennel seed
• 1 sheet puff pastry sheet
• 2 tbsp flour