Fish Stock | Kangaroo Wings

Ingredients

• 1 tbsp butter
• 1 whole onion (roughly chopped)
• 1 stalk celery (roughly chopped)
• 1 whole carrot (small, roughly chopped)
• 1 kg white fish (bones, tails, heads)
• 250 ml white wine (dry)
• 1 litre water (cold)
• 2 stalks parsley
• 2 sprigs thyme
• 1 whole bay leaf
• 1 tbsp black peppercorns (whole)