Chicken and caramelised onion sausages

• 2000 g skinless chicken thigh fillets, cut into pieces (3 cm)
• 100 g pork fat, cut into pieces (3 cm)

Caramelised onion

• 20 g olive oil
• 250 g red onion, cut into wedges
• ½ fresh long red chilli, cut into pieces
• 100 g light brown sugar
• 100 g red wine vinegar
• 1 tsp salt

Chicken sausage

• 1 tsp sea salt
• 1 tbsp dried mixed herbs
• 2 garlic cloves
• sausage casings (see Tips)