Make Honey & Co.'s chicken in plums and spice

Ingredients

• 6–8 skin-on chicken thighs
• 2 plums, quartered and stones removed
• 1 tsp whole coriander seeds
• 1 tsp whole fennel seeds
• 1 tsp salt
• ¼ tsp freshly ground black pepper
• 1 garlic clove, peeled
• 1 tbsp demerara sugar
• 3 tbsp red wine vinegar
• 2 tbsp olive oil
• 2–3 celery sticks, cut into 5cm pieces
• 1 onion, peeled and cut into wedges
• 6 garlic cloves, unpeeled
• 6-8 plums, quartered and stones removed
• A few sprigs of tarragon, to garnish
• Sea salt
• freshly ground black pepper