Boston Baked Beans

Ingredients

• 220 g dried white navy beans (soaked for at least 8 hours)
• 1 tbsp sunflower oil
• 5 shallots (finely chopped)
• 2 garlic cloves (crushed)
• 2 stalks celery (finely chopped)
• 1 796ml can diced tomatoes
• 2 tsp dried mixed herbs
• 2 cups dry cider
• pepper (to taste)
• 2 tbsp dark brown sugar
• 1 tbsp black treacle
• 1 tsp Dijon mustard
• sprigs fresh Italian parsley (to garnish)