Ingredients

Steps

• Bring milk, lemon zest, and garlic to a boil in a saucepan over medium heat.
• Remove from heat, add cod, and rest for 15 minutes until the fish is cooked.
• Boil potatoes and celeriac in salted water for 10 minutes until tender and drain.
• Mash the vegetables and beat in butter, olive oil, and some poaching milk until smooth.
• Chop half the fish and beat into the mash, then flake the remaining fish.
• Transfer to a bowl, top with flaked fish, and garnish with parsley.